Outputs (182)

Micromechanical modeling of longitudinal compression behavior and failure mechanism of unidirectional carbon fiber reinforced aluminum composites involving initial fiber misalignment (2024)
Journal Article

A micromechanical model with realistic initial fiber misalignment (IFM) was developed to simulate the longitudinal compression behavior of unidirectional carbon fiber/aluminum composites. The matrix and fiber were modeled using ductile damage law and... Read More about Micromechanical modeling of longitudinal compression behavior and failure mechanism of unidirectional carbon fiber reinforced aluminum composites involving initial fiber misalignment.

Coupled morphing of leading and trailing-edge aerofoil for improved aerodynamic and aeroacoustic performance (2024)
Presentation / Conference Contribution

Event-triggered tracking control for switched nonlinear systems (2023)
Journal Article

In this paper, we study the output tracking control problem based on the event-triggered mechanism for cascade switched nonlinear systems. Firstly, an integral controller based on event-triggered conditions is designed, and the output tracking error... Read More about Event-triggered tracking control for switched nonlinear systems.

Aerodynamics of a CRM joined-wing configuration at transonic speeds (2023)
Presentation / Conference Contribution

The presented work aims to showcase a joined-wing (JW) concept with key design parameters based on the NASA Common Research Model (CRM) configuration, to highlight its potential application for an efficient commercial transport or cargo aircraft flyi... Read More about Aerodynamics of a CRM joined-wing configuration at transonic speeds.

Validation of shock-wave/turbulent boundary-layer interaction flows by high-fidelity numerical simulations (2022)
Presentation / Conference Contribution

Shock-wave/turbulent-boundary-layer interactions (SWTBLI) are prevalent phenomena around high-speed vehicles. The resultant strong adverse pressure gradient will induce large flow separation, high wall heat flux, and strong pressure fluctuation, alon... Read More about Validation of shock-wave/turbulent boundary-layer interaction flows by high-fidelity numerical simulations.

Transient CFD modelling of air–water two-phase annular flow characteristics in a small horizontal circular pipe (2022)
Journal Article

The liquid film formed around the inner walls of a small horizontal circular pipe often exhibits non-uniform distributions circumferentially, where the film is thinner at the top surface than the bottom one. Even with this known phenomenon, the probl... Read More about Transient CFD modelling of air–water two-phase annular flow characteristics in a small horizontal circular pipe.

Unsteady flow oscillations in a 3-D ventilated model room with convective heat transfer (2022)
Journal Article

Improving indoor air quality and energy consumption is one of the high demands in the building sector. In this study, unsteady flow oscillations in a 3-D ventilated model room with convective heat transfer have been studied for three configurations o... Read More about Unsteady flow oscillations in a 3-D ventilated model room with convective heat transfer.

Optimisation of straight plate upstream deflector for the performance enhancement of vertical axis wind turbine at low, medium and high regimes of tip speed ratios (2022)
Journal Article

Location and geometry optimisations of Straight Plate Upstream Deflector (SPUD) for performance enhancement of a three-straightbladed Vertical Axis Wind Turbine (VAWT) are carried out at three regimes of tip speed ratios (TSRs). Results analysis reve... Read More about Optimisation of straight plate upstream deflector for the performance enhancement of vertical axis wind turbine at low, medium and high regimes of tip speed ratios.

A review on the use of passive flow control devices as performance enhancement of lift-type vertical axis wind turbines (2022)
Journal Article

This article provides a comprehensive review about passive flow control devices (PFCDs) implemented in lift-type vertical axis wind turbine (LVAWT), focusing on the underlying flow physics mechanisms and to what extents they can improve the LVAWT per... Read More about A review on the use of passive flow control devices as performance enhancement of lift-type vertical axis wind turbines.

Effects of an unsteady morphing wing with seamless side-edge transition on aerodynamic performance (2022)
Journal Article

This paper presents an unsteady flow analysis of a 3D wing with a morphing trailing edge flap (TEF) and a seamless side-edge transition between the morphed and static parts of a wing by introducing an unsteady parametrization method. First, a 3D stea... Read More about Effects of an unsteady morphing wing with seamless side-edge transition on aerodynamic performance.

Geometry optimisation of vertical axis wind turbine with Gurney flap for performance enhancement at low, medium and high ranges of tip speed ratios (2021)
Journal Article

Optimisation of Gurney flap (GF) geometries mounted on a three-straight-bladed vertical axis wind turbine (VAWT) is evaluated with computational fluid dynamics (CFD) solution and Taguchi method, considering the blade rotating effect at three tip spee... Read More about Geometry optimisation of vertical axis wind turbine with Gurney flap for performance enhancement at low, medium and high ranges of tip speed ratios.

Optimal design of grid-connected rooftop PV systems: An overview and a new approach with application to educational buildings in arid climates (2021)
Journal Article

Recently, rooftop photovoltaic (PV) systems are widely deployed due to their technical, economic and socio-environmental benefits. This paper presents a new design approach, which combines spatial analysis with techno-economic optimization for a robu... Read More about Optimal design of grid-connected rooftop PV systems: An overview and a new approach with application to educational buildings in arid climates.

Anatomy of air entrapment in drop impact on a solid surface (2021)
Journal Article

When a drop impacts on a solid surface, a thin air film is entrapped first and later evolves into a spherical air bubble at the center inside the drop. The problem involves several complex physical processes, including two-phase fluid flow interactio... Read More about Anatomy of air entrapment in drop impact on a solid surface.

Near stall unsteady flow responses to morphing flap deflections (2021)
Journal Article

The unsteady flow characteristics and responses of an NACA 0012 airfoil fitted with a bio-inspired morphing trailing edge flap (TEF) at near-stall angles of attack (AoA) undergoing downward deflections are investigated at a Reynolds number of 0.62 ×... Read More about Near stall unsteady flow responses to morphing flap deflections.

Aerodynamic and aeroacoustic analysis of a harmonically morphing airfoil using dynamic meshing (2021)
Journal Article

This work explores the aerodynamic and aeroacoustic responses of an airfoil fitted with a harmonically morphing Trailing Edge Flap (TEF). An unsteady parametrization method adapted for harmonic morphing is introduced, and then coupled with dynamic me... Read More about Aerodynamic and aeroacoustic analysis of a harmonically morphing airfoil using dynamic meshing.

U-model-based two-degree-of-freedom internal model control of nonlinear dynamic systems (2021)
Journal Article

This paper proposes a U-Model-Based Two-Degree-of-Freedom Internal Model Control (UTDF-IMC) structure with strength in nonlinear dynamic inversion, and separation of tracking design and robustness design. This approach can effectively accommodate mod... Read More about U-model-based two-degree-of-freedom internal model control of nonlinear dynamic systems.

Comparison study of URANS and hybrid RANS-LES models on predicting vertical axis wind turbine performance at low, medium and high tip speed ratio ranges (2020)
Journal Article

Comparison study of unsteady Reynolds-averaged Navier-Stokes (URANS) and hybrid RANS-LES models is carried out for predicting the performance of three-straight-bladed vertical axis wind turbine operating within tip speed ratios (TSRs) ranges of (1.44... Read More about Comparison study of URANS and hybrid RANS-LES models on predicting vertical axis wind turbine performance at low, medium and high tip speed ratio ranges.

Design optimization of grid-connected PV-Hydrogen for energy prosumers considering sector-coupling paradigm: Case study of a university building in Algeria (2020)
Journal Article

Integrating sector coupling technologies into Hydrogen (H2) based hybrid renewable energy systems (HRES) is becoming a promising way to create energy prosumers, despite the very little research work being done in this largely unexplored field. In thi... Read More about Design optimization of grid-connected PV-Hydrogen for energy prosumers considering sector-coupling paradigm: Case study of a university building in Algeria.

Flow analysis in right-angled pipes with different geometric shapes and parameters for sludge discharge in slime shield machines measured using a CFD-DEM method (2020)
Journal Article

Mud and gravel deposition often occurs in circulation systems of pumps. In this paper, a liquid-solid coupling method combining CFD and DEM is proposed to study two-phase flow behavior of water, The flow characteristics of water-clay mud and the moti... Read More about Flow analysis in right-angled pipes with different geometric shapes and parameters for sludge discharge in slime shield machines measured using a CFD-DEM method.

A GIS-MOPSO integrated method for optimal design of grid-connected HRES for educational buildings (2020)
Book Chapter

In this paper, an optimal design of a grid-connected PV-battery-hydrogen hybrid renewable energy system (HRES) at a University campus in Ouargla, Algeria is carried out. To achieve this goal, geographical information system (GIS), CAD software and mu... Read More about A GIS-MOPSO integrated method for optimal design of grid-connected HRES for educational buildings.

Integrated supply–demand energy management for optimal design of off-grid hybrid renewable energy systems for residential electrification in arid climates (2020)
Journal Article

The growing research interest in hybrid renewable energy systems (HRESs) has been regarded as a natural and yet critical response to address the challenge of rural electrification. Based on a Bibliometric analysis performed by authors, it was conclud... Read More about Integrated supply–demand energy management for optimal design of off-grid hybrid renewable energy systems for residential electrification in arid climates.

On the turbulence amplification in shock-wave/turbulent boundary layer interaction (2020)
Journal Article

The mechanism of turbulence amplification in shock-wave/boundary layer interactions is reviewed, and a new turbulence amplification mechanism is proposed based on the analysis of data from direct numerical simulation of an oblique shock-wave/flat-pla... Read More about On the turbulence amplification in shock-wave/turbulent boundary layer interaction.

Assessment of stress-blended eddy simulation model for accurate performance prediction of vertical axis wind turbine (2020)
Journal Article

Purpose: The aim of this paper is to assess the ability of a stress-blended eddy simulation (SBES) turbulence model to predict the performance of a three-straight-bladed vertical axis wind turbine (VAWT). The grid sensitivity study is conducted to ev... Read More about Assessment of stress-blended eddy simulation model for accurate performance prediction of vertical axis wind turbine.

The effect of gurney flap on flow characteristics of vertical axis wind turbine (2020)
Journal Article

Recently, the Gurney Flap (GF) has been used to improve the performance of Horizontal Axis Wind Turbine (HAWT) by enhancing its lift coefficient. Compared to HAWT, research on GF application for Vertical Axis Wind Turbine (VAWT) is very limited. More... Read More about The effect of gurney flap on flow characteristics of vertical axis wind turbine.

Dynamic mesh framework for morphing wings CFD - User defined function (2020)
Digital Artefact

This project contains the user-defined functions (UDF) necessary to perform unsteady computational fluid dynamics (CFD) analysis of dynamically morphing wings equipped with morphing flaps. There are three UDFs for each of the following application... Read More about Dynamic mesh framework for morphing wings CFD - User defined function.

An Investigation of a Morphing Flapped Wing (2020)
Presentation / Conference Contribution

This study investigated the design, development, and validation of an alternative method to achieve morphing in wings through the implementation of a sliding mechanism concept. Performance was tested at a specific Reynolds number (Re = 0.62 × 106). M... Read More about An Investigation of a Morphing Flapped Wing.

A composite feedback approach to stabilize nonholonomic systems with time varying time delays and nonlinear disturbances (2020)
Journal Article

In this work, we propose a robust stabilizer for nonholonomic systems with time varying time delays and nonlinear disturbances. The proposed approach implements a composite nonlinear feedback structure in which a linear controller is designed to yiel... Read More about A composite feedback approach to stabilize nonholonomic systems with time varying time delays and nonlinear disturbances.

Direct numerical simulation of a tip-leakage flow in a planar duct with a longitudinal slit (2019)
Journal Article

A planar duct flow configuration with a cross-flow injected from a longitudinal slit close to the upper wall of the duct is studied by using a direct numerical simulation approach to explore the underlying flow mechanism in relation to the tip-leakag... Read More about Direct numerical simulation of a tip-leakage flow in a planar duct with a longitudinal slit.

A GIS-MOPSO integrated method for optimal design of grid-connected HRES for educational buildings (2019)
Presentation / Conference Contribution

 Abstract. In this paper, an optimal design of a grid-connected PV-battery-hydrogen hybrid renewable energy system (HRES) at a University campus in Ouargla, Algeria is carried out. To achieve this goal, geographical information system (GIS), CAD sof... Read More about A GIS-MOPSO integrated method for optimal design of grid-connected HRES for educational buildings.

Detached eddy simulation of blade trailing-edge cutback cooling performance at various ejection slot angles (2019)
Journal Article

© 2019 Elsevier Inc. Detached eddy simulation (DES) has been carried out to study a three-dimensional trailing-edge (TE) cutback turbine blade model with five rows of staggered circular pin-fin arrays inside the cooling passage, in order to evaluate... Read More about Detached eddy simulation of blade trailing-edge cutback cooling performance at various ejection slot angles.

Blockchain enabled industrial Internet of Things technology (2019)
Journal Article

The emerging blockchain technology shows promising potential to enhance industrial systems and the Internet of things (IoT) by providing applications with redundancy, immutable storage, and encryption. In the past a few years, many more applications... Read More about Blockchain enabled industrial Internet of Things technology.

Pin-fin shape and orientation effects on wall heat transfer predictions of gas turbine blade (2019)
Presentation / Conference Contribution

Turbine blades are often exposed to the ‘hot’ gas environment and thus it is essential to apply effective cooling technique to extend the blade lifetime. In the present work, wall heat transfer characteristics inside a blade trailing-edge coolant pas... Read More about Pin-fin shape and orientation effects on wall heat transfer predictions of gas turbine blade.

Numerical study of pin-fin cooling on gas turbine blades (2019)
Presentation / Conference Contribution

This paper describes a numerical study of internal pin-fin cooling performance of a trailing-edge cutback configuration for gas turbine blade. The study was performed at two steps: first, to validate simulation results from an existing TE cutback coo... Read More about Numerical study of pin-fin cooling on gas turbine blades.

Influence of non-iterative time-advancement schemes on the aerodynamic prediction of pitching airfoils using dynamic mesh (2019)
Presentation / Conference Contribution

A pitching airfoil problem is addressed in this paper to assess the use of a non-iterative time-advancement (NITA) scheme with dynamic mesh method, and also to estimate possible CPU time savings. Simulations have shown that using a combination of dyn... Read More about Influence of non-iterative time-advancement schemes on the aerodynamic prediction of pitching airfoils using dynamic mesh.

Flow response to rapid morphing flap deflection (2019)
Presentation / Conference Contribution

Flow response to rapid morphing flap deflection is investigated at a Reynolds number based on chord of 0.62×10^6 for a 2D NACA 0012 airfoil fitted with a morphing Trailing-edge flap (TEF) at a range of angles of attack and morphing frequencies. T... Read More about Flow response to rapid morphing flap deflection.

Assessment of stress-blended eddy simulation model for accurate prediction of three-straight-bladed vertical axis wind turbine performance (2019)
Presentation / Conference Contribution

The performance of a three-straight-bladed vertical axis wind turbine at low tip speed ratio has been evaluated by detached eddy simulation (DES) with stress-blended eddy simulation (SBES) turbulence model. Two grid topologies around the blades, i.e.... Read More about Assessment of stress-blended eddy simulation model for accurate prediction of three-straight-bladed vertical axis wind turbine performance.

Flow separation control over a rounded ramp with spanwise alternating wall actuation (2019)
Journal Article

An implicit large-eddy simulation is carried out to study turbulent boundary-layer separation from a backward-facing rounded ramp with active wall actuation control. This method, called spanwise alternating distributed strips control, is imposed onto... Read More about Flow separation control over a rounded ramp with spanwise alternating wall actuation.

Selecting nozzle arrangement of a chimney tower to reduce the temperature and to increase the entrainment mass flow (2018)
Journal Article

© TJPRC Pvt. Ltd. The aim of this research work was to find the best arrangement of nozzles inside the chimney tower to reduce the temperature and to increase the entrainment mass flow. An existing design of the nozzle arrangement was used as the ref... Read More about Selecting nozzle arrangement of a chimney tower to reduce the temperature and to increase the entrainment mass flow.

CFD simulation of three-straight-bladed vertical axis wind turbine at low tip speed ratios (2018)
Presentation / Conference Contribution

This paper presents computational fluid dynamics (CFD) simulations of a three-straight-bladed Vertical Axis Wind Turbine (VAWT) operating at a wind speed of 9 m/s and low Tip Speed Ratio (TSR) ranging from 1.44 to 3.3. The turbine blade has NACA 0021... Read More about CFD simulation of three-straight-bladed vertical axis wind turbine at low tip speed ratios.

A review of current technical development in vertical axis wind turbine technologies and their braking system for low speed, urban and offshore areas application (2018)
Presentation / Conference Contribution

Recently, there are growing interests of using Vertical Axis Wind Turbine (VAWT) to harvest wind energy from low wind speed in urban areas to relatively high wind speed in offshore wind farms. Horizontal Axis Wind Turbine (HAWT) has been known to hav... Read More about A review of current technical development in vertical axis wind turbine technologies and their braking system for low speed, urban and offshore areas application.

Zeolite supported platinum nanoparticles for small organic molecule oxidation and reduction in fuel cell using impregnation (2018)
Presentation / Conference Contribution

The influence of valve-pump weight ratios on the dynamic response of leaking valve-pump parallel control hydraulic systems (2018)
Journal Article

© 2018 by the authors. A new leaking valve-pump parallel control (LVPC) oil hydraulic system is proposed to improve the performance of dynamic response of present variable speed pump control (VSPC) system, which is an oil hydraulic control system wit... Read More about The influence of valve-pump weight ratios on the dynamic response of leaking valve-pump parallel control hydraulic systems.

Further development of a variable camber morphing mechanism using the direct control airfoil geometry concept (2018)
Presentation / Conference Contribution

This paper reports on the design, manufacture and testing of an improved variable camber morphing wing mechanism following the study by Evans et al. (2016), who employed the so-called Direct Control Airfoil Geometry (DCAG) concept to actuate the trai... Read More about Further development of a variable camber morphing mechanism using the direct control airfoil geometry concept.

Morphing airfoils analysis using dynamic meshing (2018)
Journal Article

© 2018, Emerald Publishing Limited. Purpose: The purpose of this paper is to use dynamic meshing to perform CFD analyses of a NACA 0012 airfoil fitted with a morphing trailing edge (TE) flap when it undergoes static and time-dependent morphing. The s... Read More about Morphing airfoils analysis using dynamic meshing.

Scalable generation of large-scale unstructured meshes by a novel domain decomposition approach (2018)
Journal Article

© 2018 Elsevier Ltd A parallel algorithm is proposed for scalable generation of large-scale tetrahedral meshes. The key innovation is the use of a mesh-simplification based domain decomposition approach. This approach works on a background mesh with... Read More about Scalable generation of large-scale unstructured meshes by a novel domain decomposition approach.

Slat broadband noise prediction of multi-element 30P30N airfoil by a hybrid RANS-LES method (2018)
Presentation / Conference Contribution

This paper presents a combined CFD and CAA study to assess the slat noise emissions from a multi-element 30P30N airfoil at the 5-degree and 8-degree angle of attack, using a hybrid RANS-LES method. In this simulation, the structured mesh is used and... Read More about Slat broadband noise prediction of multi-element 30P30N airfoil by a hybrid RANS-LES method.

Aeroacoustics investigation of a harmonically morphing trailing edge flap (2018)
Presentation / Conference Contribution

In this paper, an aeroacoustic study of a NACA 0012 airfoil fitted with a morphing Trailing Edge Flap (TEF) was performed at conditions of an Angle of Attack (AoA) = 4º, Reynolds number = 0.62×10^6 and Mach number = 0.11. A modified parametrization m... Read More about Aeroacoustics investigation of a harmonically morphing trailing edge flap.

Zeolite supported Pd electrocatalyst nanoparticle characterization (2018)
Journal Article

© 2018 Hydrogen Energy Publications LLC A laboratory made 1.5 wt% Palladium (Pd) zeolite electrocatalyst is investigated using the Extended X-ray Adsorption Fine Structure (EXAFS) and Cyclic Voltammetry (CV) techniques to reveal Pd structure and resu... Read More about Zeolite supported Pd electrocatalyst nanoparticle characterization.

Unsteady 1-D thrust modeling with EOS effects for ram accelerator experiments at different bores (2018)
Journal Article

Advances made to the unsteady, one-dimensional (1-D) modeling of the thermally choked ram accelerator thrust-Mach number characteristics include the use of real-gas equations of state to account for the compressibility effects of the combustion produ... Read More about Unsteady 1-D thrust modeling with EOS effects for ram accelerator experiments at different bores.

Analysis of a 3D unsteady morphing wing with seamless side-edge transition (2018)
Presentation / Conference Contribution

© 2018, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved. In this paper, a comparative study between a NACA 0012 rectangular wing with a statically morphed Trailing Edge Flap (TEF) and the same wing with a hinged flap... Read More about Analysis of a 3D unsteady morphing wing with seamless side-edge transition.

Aerodynamic analysis of a harmonically morphing flap using a hybrid turbulence model and dynamic meshing (2018)
Presentation / Conference Contribution

© 2018, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved. A numerical study of the NACA 0012 airfoil fitted with a harmonically morphing trailing edge flap (TEF) is performed at an angle of attack of 4º and a Reynolds... Read More about Aerodynamic analysis of a harmonically morphing flap using a hybrid turbulence model and dynamic meshing.

Large-Scale Streamwise Vortices in Turbulent Channel Flow Induced by Active Wall Actuations (2017)
Journal Article

© 2017, Springer Science+Business Media B.V., part of Springer Nature. Direct numerical simulations of turbulent flow in a plane channel using spanwise alternatively distributed strips (SADS) are performed to investigate the characteristics of large-... Read More about Large-Scale Streamwise Vortices in Turbulent Channel Flow Induced by Active Wall Actuations.

Ensemble-Empirical-Mode-Decomposition based micro-Doppler signal separation and classification (2017)
Journal Article

The target echo signals obtained by Synthetic Aperture Radar (SAR) and Ground Moving Target Indicator (GMTI platforms are mainly composed of two parts, the micro-Doppler signal and the target body part signal. The wheeled vehicle and the track vehicl... Read More about Ensemble-Empirical-Mode-Decomposition based micro-Doppler signal separation and classification.

Equations of state for thrust modeling of ram accelerator at different bores (2017)
Presentation / Conference Contribution

The ram accelerator is a propulsion concept based on using shock-induced combustion to accelerate projectiles traveling at supersonic speeds in a launch tube pre-filled with a gaseous combustible mixture. Extensive experimental studies have been carr... Read More about Equations of state for thrust modeling of ram accelerator at different bores.

Direct numerical simulation of a tip-leakage vortex model in a planar duct with a longitudinal slit (2017)
Presentation / Conference Contribution

A computational model of a planar duct with a cross flow injected from a longitudinal slit on the top of the duct is developed to study the tip-leakage vortex (TLV) which is one of the most important flow phenomena within the rotor of turbomachinery.... Read More about Direct numerical simulation of a tip-leakage vortex model in a planar duct with a longitudinal slit.

Zeolite supported Pd electrocatalyst nano-particle characterization (2017)
Presentation / Conference Contribution

Palladium (Pd) as one of platinum (Pt) group metals has attracted significant attentions since it has shown good activities for hydrogen reaction (HOR) and oxygen reduction reaction (ORR) in fuel cell application and high solubility and mobility... Read More about Zeolite supported Pd electrocatalyst nano-particle characterization.

En-situ EXAFS investigation of zeolite supported Pt electrocatalyst structure (2017)
Journal Article

© 2017 Informa UK Limited, trading as Taylor & Francis Group. Experimental investigation was carried out for Pt electrochemical performance and Pt particle size using 1.5 and 5 wt% Pt loading on zeolite electrocatalysts made by Pt(NH3)4(NO3)2 or Pt... Read More about En-situ EXAFS investigation of zeolite supported Pt electrocatalyst structure.

Tetrahedral mesh improvement by shell transformation (2017)
Journal Article

© 2016, Springer-Verlag London. Existing flips for tetrahedral meshes simply make a selection from a few possible configurations within a single shell (i.e., a polyhedron that can be filled up with a mesh composed of a set of elements that meet each... Read More about Tetrahedral mesh improvement by shell transformation.

Ex-situ exafs investigation of zeolite supported pt electrocatalyst structure (2017)
Presentation / Conference Contribution

The electrochemical performance of zeolite supported 1.5 wt% Pt electrocatalyst in fuel cell has been discussed in previous studies [1, 2]. This work will focus on investigating the influence of Pt loading and Pt deposition methods on Pt electrochemi... Read More about Ex-situ exafs investigation of zeolite supported pt electrocatalyst structure.

Large-scale secondary vortices in the turbulent channel flow induced by active wall actuations (2017)
Presentation / Conference Contribution

Direct numerical simulations (DNS) of the turbulent channel flow with spanwise alternatively distributed out-of-phase (OP) and in-phase (IP) wall actuations strips (SADS) are conducted to investigate the characteristics of the large-scale streamwise... Read More about Large-scale secondary vortices in the turbulent channel flow induced by active wall actuations.

Large-scale Secondary Vortices Generated by Wall Actuations: Application to the Turbulent Channel Flow (2017)
Presentation / Conference Contribution

The large-scale streamwise vortex (LSSV) generation mechanism in the turbulent boundary layer is closely linked to the turbulent mixing process and its potential to suppress flow separation. Direct numerical simulations (DNSs) of weakly compressible... Read More about Large-scale Secondary Vortices Generated by Wall Actuations: Application to the Turbulent Channel Flow.

Zeolite supported palladium nanoparticle characterization for fuel cell application (2017)
Journal Article

© 2017 Hydrogen Energy Publications LLC Palladium (Pd) has been widely used as a type of hydrogen storage material and has attracted much attention for fuel cell applications, due to its high solubility and mobility of hydrogen in Pd. In this study,... Read More about Zeolite supported palladium nanoparticle characterization for fuel cell application.

Unsteady parametrization of a morphing wing design for improved aerodynamic performance (2017)
Presentation / Conference Contribution

A morphing wing is a bio-inspired concept where all moving parts e.g. slats/flaps are replaced with a deformable body. This paper describes a methodology that uses modified parametrization methods to define a morphing geometry, and applies user-defin... Read More about Unsteady parametrization of a morphing wing design for improved aerodynamic performance.

DES prediction of a 3-element high-lift airfoil with a blown flap (2017)
Presentation / Conference Contribution

Over the last 20 years, research on aerodynamic flow control methods has received considerable attention due to its ability to improve aircraft aerodynamic performance beyond current capabilities (Ternoy et al., 2013). It is evident that a successful... Read More about DES prediction of a 3-element high-lift airfoil with a blown flap.

Numerical analysis of HyShot Scramjet Model with different throat heights (2017)
Presentation / Conference Contribution

This paper presents a computational fluid dynamics (CFD) study of non-reacting and reacting flows in a scramjet model with three different throat heights. This scramjet model includes two compression ramps at the inlet, followed by a combustion chamb... Read More about Numerical analysis of HyShot Scramjet Model with different throat heights.

The influence of acoustic field induced by HRT on oscillation behavior of a single droplet (2017)
Journal Article

This paper presents an experimental and theoretical study on the effects of an acoustic field induced by Hartmann Resonance Tube (HRT) on droplet deformation behavior. The characteristics of the acoustic field generated by HRT are investigated. Resul... Read More about The influence of acoustic field induced by HRT on oscillation behavior of a single droplet.

Large-eddy simulation of MVG controlled oblique Shockwave/Boundary layer interaction (2017)
Presentation / Conference Contribution

© 2017 by Guang Yang, Beihang University, Beijing, China. Shock wave boundary layer interaction is an ubiquitous and important phenomenon in supersonic and hypersonic flow scheme. In this paper, a Mach 2.5 supersonic boundary layer impinged by an obl... Read More about Large-eddy simulation of MVG controlled oblique Shockwave/Boundary layer interaction.

Numerical investigation on shock train control and applications in a scramjet engine (2016)
Journal Article

© 2016 Elsevier Masson SAS Different factors which help to control the shock train in the scramjet isolator and combustor were analyzed via numerical investigations, and were applied to a whole scramjet engine in the working environment. A streamline... Read More about Numerical investigation on shock train control and applications in a scramjet engine.

U-model enhanced control of nonminimum-phase dynamic systems (2016)
Presentation / Conference Contribution

In this study, U-model based control system design methodology is expanded into control of nonminimum-phase (NMP) dynamic systems. With U-model framework, a desired minimum-phase (MP) plant is established, which forms as a generic prototype. To achie... Read More about U-model enhanced control of nonminimum-phase dynamic systems.

Investigation of three-dimensional shock wave/turbulent-boundary-layer interaction initiated by a single fin (2016)
Journal Article

Three-dimensional shock wave/turbulent-boundary-layer interaction of a hypersonic flow passing a single fin mounted on a flat plate at a Mach number of five and unit Reynolds number 3.7×10^7 was conducted by a large-eddy simulation approach. The perf... Read More about Investigation of three-dimensional shock wave/turbulent-boundary-layer interaction initiated by a single fin.

Numerical investigation of wavy-annular airwater two-pase flow in a small horizontal pipe (2016)
Presentation / Conference Contribution

This study has been carried out using Computational Fluid Dynamics (CFD) to investigate the annular two phase flow behavior that flow pattern has some desirable features for renewable energy system application. The circumferential distribution of t... Read More about Numerical investigation of wavy-annular airwater two-pase flow in a small horizontal pipe.

Shock-wave/boundary layer interaction control using spark-jet and micro-vortex generator (2016)
Presentation / Conference Contribution

We present Large-Eddy Simulation of two control devices: active control by SparkJet and passive control by MVG. It is found that both methods can greatly alleviate the separation. Flowfield analysis shows that the streamwise counter-rotating vortex g... Read More about Shock-wave/boundary layer interaction control using spark-jet and micro-vortex generator.

On the effect of the distance between longitudinally ridged walls in a turbulent channel flow (2016)
Presentation / Conference Contribution

Direct numerical simulation (DNS) of a turbulent channel flow with longitudinally rigid walls set at different distances has been carried out and results are analyzed and presented, together with findings and observations.

Large-scale turbulent secondary flows induced by spanwise alternatively distributed strips control (2016)
Presentation / Conference Contribution

In this study, direct numerical simulations (DNS) of a weakly compressible turbulent channel flow with Spanwise Alternatively Distributed Strips (SADS) control are conducted to investigate the characteristics of the LSSV induced by small-scale wall a... Read More about Large-scale turbulent secondary flows induced by spanwise alternatively distributed strips control.

Comparative study on pole placement controller design with U-Model approach & classical approach (2016)
Presentation / Conference Contribution

© 2016 TCCT. As a universal framework, U-model has established an enabling design prototype for the control of non-linear dynamic plants with concise and applicable linear approaches. This study is devoted to a remaining fundamental research question... Read More about Comparative study on pole placement controller design with U-Model approach & classical approach.

DES prediction of a novel high-lift device step 1: Steady blowing (2016)
Presentation / Conference Contribution

This presentation focus on my recent results from year one. I.E. Identify the best CFD method to use with high-lift devices and apply flow control to improve performance.

Large-eddy simulation of shock-wave/turbulent boundary-layer interactions and its control using Sparkjet (2016)
Journal Article

Large-eddy simulations (LES) of the oblique impinging shock-wave/flat plate boundary layer interactions at Mach=2.3 and Reδ=20000 were carried out to investigate the underlying flow physics associated with flow separation and shock unsteadiness. The... Read More about Large-eddy simulation of shock-wave/turbulent boundary-layer interactions and its control using Sparkjet.

Modelling air and water two-phase annular flow in small horizontal pipe (2016)
Journal Article

Numerical study using Computational Fluid Dynamics (CFD) has been carried out to investigate flow behaviours and underlying physical phenomena associated with air/water two-phase flow inside a small horizontal tube of an inner diameter 8.8mm. The bas... Read More about Modelling air and water two-phase annular flow in small horizontal pipe.

Investigation of zeolite supported platinum electrocatalyst for electrochemical oxidation of small organic species (2016)
Journal Article

© 2016 Hydrogen Energy Publications LLC Zeolite supported Pt electrocatalysts, made by ion exchange method using Pt/Y type zeolite, have been investigated to determine Pt electrochemical activity of HCOOH and CH3OH oxidation using the cyclic voltamme... Read More about Investigation of zeolite supported platinum electrocatalyst for electrochemical oxidation of small organic species.

Large-eddy simulation of shock-wave/turbulent boundary layer interaction with and without SparkJet control (2016)
Journal Article

© 2016 Chinese Society of Aeronautics and Astronautics. Production and hosting by Elsevier Ltd. The efficiency and mechanism of an active control device "SparkJet" and its application in shock-induced separation control are studied using large-eddy s... Read More about Large-eddy simulation of shock-wave/turbulent boundary layer interaction with and without SparkJet control.

Development and testing of a variable camber morphing wing mechanism (2016)
Presentation / Conference Contribution

The aim of this study was to develop, build and test a morphing wing design in a low-speed wind tunnel to demonstrate its viability as a practical morphing mechanism. The original concept this study is based upon is so-called the Direct Control Airfo... Read More about Development and testing of a variable camber morphing wing mechanism.

DES prediction of near stall performance of a high lift airfoil (2016)
Presentation / Conference Contribution

CFD analyses using Detached Eddy Simulation (DES) and Reynolds-Averaged Navier-Stokes (RANS) techniques are conducted on a two-element NLR 7301 airfoil configuration at take-off flow conditions to predict its near stall aerodynamic performance. Meshi... Read More about DES prediction of near stall performance of a high lift airfoil.

DES study of blade trailing edge cutback cooling performance with various lip thicknesses (2016)
Journal Article

© 2015 Elsevier Ltd. All rights reserved. Three-dimensional detached-eddy simulation (DES) study has been carried out to evaluate the cooling performance of a trailing-edge cutback turbine blade with various lip thickness to slot height ratios (t/H).... Read More about DES study of blade trailing edge cutback cooling performance with various lip thicknesses.

Large-eddy simulation of shock-induced flow separation control using SparkJet concept (2016)
Presentation / Conference Contribution

Large-Eddy Simulation (LES) of shock-wave/boundary layer interactions (SWBLI) with SparkJet control technique is carried out in this paper. The base flow is an oblique shock-wave generated by an 8°wedge impinging onto a spatially-developing Mach 2.3... Read More about Large-eddy simulation of shock-induced flow separation control using SparkJet concept.

Numerical investigation on two streamline-traced busemann inlet-isolators (2016)
Presentation / Conference Contribution

This paper presents a computational fluid dynamics (CFD) study of flow characteristics within three-dimensional Busemann inlet with isolator models. The primary aim of the study was to compare various performances between two streamline-traced inlets... Read More about Numerical investigation on two streamline-traced busemann inlet-isolators.

Multistep simulation for three-dimensional ice accretion on an aircraft wing (2016)
Presentation / Conference Contribution

A simplified icing model combined with Eulerian two-phase flow theory has been proposed and the method was employed for direct simulation of ice accretion occurred on an aircraft wing. An innovative wall boundary condition treatment has been proposed... Read More about Multistep simulation for three-dimensional ice accretion on an aircraft wing.

An improved local remeshing algorithm for moving boundary problems (2016)
Journal Article

© 2016 The Author(s). Three issues are tackled in this study to improve the robustness of local remeshing techniques. Firstly, the local remeshing region (hereafter referred to as ‘hole’) is initialized by removing low-quality elements and then conti... Read More about An improved local remeshing algorithm for moving boundary problems.

Direct numerical simulation of supersonic turbulent flows around a tandem expansion-compression corner (2015)
Journal Article

© 2015 AIP Publishing LLC. The M = 2.9 supersonic turbulent flows over a tandem expansion-compression corner configuration with a sharp deflection angle of 25° at three Reynolds numbers Reδ = 20 000, 40 000, and 80 000 were studied by using direct nu... Read More about Direct numerical simulation of supersonic turbulent flows around a tandem expansion-compression corner.

Proton modified Pt zeolite fuel cell electrocatalysts (2015)
Book Chapter

© Springer International Publishing Switzerland 2015. NaY zeolite has been selected as a suitable material to host 1.5 wt.% platinum (Pt) loading on zeolite using ion-exchange methods of Pt(NH3)4(NO3)2 without excess NH4NO3 nitrate and Pt(NH3)4(NO3)2... Read More about Proton modified Pt zeolite fuel cell electrocatalysts.

Large-eddy simulation of a three-dimensional shock-wave/turbulent boundary layer interaction of a single-fin (2015)
Presentation / Conference Contribution

The three-dimension (3D) shock-wave/turbulent boundary layer interaction (SWTBLI) raised from a hypersonic flow passing a single-fin at Mach 5 is investigated i by using LES. The performed LES has demonstrated very good agreements with available expe... Read More about Large-eddy simulation of a three-dimensional shock-wave/turbulent boundary layer interaction of a single-fin.

Experimental study of characteristics of bimetallic Pt-Fe nano-particle fuel cell electrocatalyst (2015)
Journal Article

© 2015 Elsevier Ltd. The characteristics of 1.5wt% Platinum (Pt) loading on Fe incorporated Y zeolite (Pt-Fe/Y zeolite) nano-electrocatalysts have been experimentally studied by the extended X-ray adsorption fine structure (EXAFS) and cyclic voltamme... Read More about Experimental study of characteristics of bimetallic Pt-Fe nano-particle fuel cell electrocatalyst.

CFD of air/water two-phase flow in small horizontal pipe (2015)
Presentation / Conference Contribution

Computational Fluid Dynamics (CFD) has been applied to investigate air/water two-phase flow characteristics in an 8.8mm I.D small horizontal pipe. Simulation has successfully predicted water film thickness using newly developed user defined wave func... Read More about CFD of air/water two-phase flow in small horizontal pipe.

DNS of transitional and turbulent flow simulations (2015)
Presentation / Conference Contribution

An in-house direct numerical simulation (DNS) code SBLI has been developed and used extensively for high-performance computation (HPC) of transitional and turbulent flows, most related to shock/boundary-layer interaction problems. The code has also p... Read More about DNS of transitional and turbulent flow simulations.

Numerical optimisation of thermal comfort improvement for indoor environment with occupants and furniture (2015)
Journal Article

© 2014 Elsevier B.V. All rights reserved. Indoor thermal environment of a 3-D ventilated room was studied by computational fluid dynamics to understand correlations between heat generation, ventilation velocity and thermal sensation indices. The exis... Read More about Numerical optimisation of thermal comfort improvement for indoor environment with occupants and furniture.

Assessment of the low-dissipation monotonicity-preserving scheme in a series of DNS of shock-wave/turbulent boundary layer interactions (2015)
Presentation / Conference Contribution

The seventh-order low-dissipation monotonicity-preserving scheme developed by Fang et al. (Journal of Scientific Computing, 2013, 56:67-95) was assessed in direct numerical simulations (DNS) of isotropic turbulence and channel flow. The influence of... Read More about Assessment of the low-dissipation monotonicity-preserving scheme in a series of DNS of shock-wave/turbulent boundary layer interactions.

Mixing flow characteristics for a transverse sonic jet injecting into a supersonic crossflow (2015)
Presentation / Conference Contribution

Detached-eddy simulation (DES) of a sonic jet flow issuing perpendicularly into a supersonic crossflow is presented. The supersonic boundary layer flow has conditions of incoming Mach number 1.6 and Reynolds number Reδ 1.08×105, based on the free-str... Read More about Mixing flow characteristics for a transverse sonic jet injecting into a supersonic crossflow.

Large-eddy simulation of a three-dimensional hypersonic shock wave turbulent boundary layer interaction of a single fin (2015)
Presentation / Conference Contribution

The large-eddy simulation (LES) of a hypersonic flow passing a single-fin at Mach 5 and Re∞=3.7×107/m was conducted and the three-dimensional (3D) shock wave/turbulent boundary layer interaction (SWTBLI) was studied in the present paper. This is prob... Read More about Large-eddy simulation of a three-dimensional hypersonic shock wave turbulent boundary layer interaction of a single fin.

Equations of state implementation for 1-D modelling of performance in ram accelerator thermally choked propulsion mode (2015)
Journal Article

© 2015 Inderscience Enterprises Ltd. This paper presents advancement on one-dimensional (1-D) unsteady modelling of a ram accelerator (RAMAC) in the sub-detonative velocity regime by including real-gas equations of state (EoS) in order to account for... Read More about Equations of state implementation for 1-D modelling of performance in ram accelerator thermally choked propulsion mode.

On the reliability of reynolds-averaged navier stokes prediction of mean flow characteristics of a rectangular turbulent jet in crossflow (2014)
Journal Article

© 2014 Khali and Yao. A jet of fluid discharging into a cross stream, also known as Jet In Crossflow (JICF), has received many experimental and numerical investigations. In addition to the fundamental understanding of three-dimensional mixing and she... Read More about On the reliability of reynolds-averaged navier stokes prediction of mean flow characteristics of a rectangular turbulent jet in crossflow.

Direct numerical simulation of supersonic flows passing a backward step (2014)
Presentation / Conference Contribution

The Mach 2.9 supersonic turbulent flow over an expansion-compression corner with a sharp deflection angle of 25° at three Reynolds numbers Re_δ=20000, Re_δ=40000 and Re_δ=80000 were studied by using a recently developed direct numerical simulation (... Read More about Direct numerical simulation of supersonic flows passing a backward step.

Investigation of low-dissipation monotonicity-preserving scheme for direct numerical simulation of compressible turbulent flows (2014)
Journal Article

© 2014 Elsevier Ltd. The influence of numerical dissipation on direct numerical simulation (DNS) of decaying isotropic turbulence and turbulent channel flow is investigated respectively by using the seventh-order low-dissipation monotonicity-preservi... Read More about Investigation of low-dissipation monotonicity-preserving scheme for direct numerical simulation of compressible turbulent flows.

Proton modified Pt zeolite fuel cell electrocatalysts (2014)
Presentation / Conference Contribution

NaY Zeolite is selected as a suitable material to host 1.5 wt% Platinum (Pt) loading on zeolite using ion exchange method (a) Pt(NH3)4(NO3)2 without excess NH4NO3 nitrate and (b) Pt(NH3)4(NO3)2 with excess NH4NO3 nitrate. The structure/reactivity rel... Read More about Proton modified Pt zeolite fuel cell electrocatalysts.

Effects of micro blowing/suction flow control devices on a NACA0015 airfoil (2014)
Presentation / Conference Contribution

As a newly emerged active flow control technique, micro blowing/suction has shown a great potential in reducing the skin friction of turbulent flows. Throughout comprehensive analyses of active flow control of micro blowing/suction devices for a NACA... Read More about Effects of micro blowing/suction flow control devices on a NACA0015 airfoil.

Direct numerical simulation of supersonic turbulent flow in an expansion-compression corner at mach=2.9 (2014)
Presentation / Conference Contribution

Shock-wave/turbulent boundary layer interactions (SWTBLI) are prevalent phenomena in high-speed flights, which could cause large flow separation and high wall heat flux and strong pressure fluctuation, therefore, affect significantly the aero-thermod... Read More about Direct numerical simulation of supersonic turbulent flow in an expansion-compression corner at mach=2.9.

Numerical simulations of two-dimensional and three-dimensional shock wave/turbulent boundary layer interactions (2014)
Presentation / Conference Contribution

The impinging shock-wave/flat-plate boundary layer interaction is a standard CFD case for two-dimensional (2D) SWTBLI, which represents the simplest SWTBLI configuration for the validation of turbulence models and computational methods. Although plen... Read More about Numerical simulations of two-dimensional and three-dimensional shock wave/turbulent boundary layer interactions.

Direct numerical simulation of a turbulent flow over an axisymmetric hill (2014)
Journal Article

Direct numerical simulation (DNS) of a turbulent flow over an axisymmetric hill has been carried out to study the three-dimensional flow separation and reattachment that occur on the lee-side of the geometry. The flow Reynolds number is Re H=6500, ba... Read More about Direct numerical simulation of a turbulent flow over an axisymmetric hill.

Predicting film cooling performance of trailing–edge cutback turbine blades by detached–eddy simulation (2014)
Presentation / Conference Contribution

This paper describes numerical studies of the film cooling performance of cutback trailing-edge gas turbine blades using the detached eddy simulation (DES) approach, in order to improve results obtained by industry standard steady RANS and unsteady R... Read More about Predicting film cooling performance of trailing–edge cutback turbine blades by detached–eddy simulation.

Modelling conjugate flow and heat transfer in a ventilated room for indoor thermal comfort assessment (2014)
Journal Article

Conjugate natural and forced convection heat transfers in a domestic model room of finite-thickness walls and a heat source have been numerically studied. A 2-D non-ventilated square model room with a heat source is investigated at first for conditio... Read More about Modelling conjugate flow and heat transfer in a ventilated room for indoor thermal comfort assessment.

Development of a multi-block high-order DNS code for turbulent flow simulations (2014)
Presentation / Conference Contribution

© 2010 IOP Publishing Ltd. A high-order finite-differences direct numerical simulation code is developed for studying turbulent flows over complex geometries. The solver uses a global mapping based multi-block arrangement, with each block consisting... Read More about Development of a multi-block high-order DNS code for turbulent flow simulations.

Evaluation of wall heat transfer in turbine blade trailing-edge passage (2013)
Presentation / Conference Contribution

Bimetallic PtFe nano-particle fuel cell electrocatalyst for direction methanol fuel cell (2013)
Presentation / Conference Contribution

Scramjet flow and intake SBLI: Technical challenges and case study (2013)
Journal Article

This paper reviews some basic research areas associated with Scramjet-powered hypersonic flying vehicle, particularly the forebody boundary-layer transition and intake shock-wave boundary-layer interactions (SBLI). Some technical and physical challen... Read More about Scramjet flow and intake SBLI: Technical challenges and case study.

Effect of mesh topologies on wall heat transfer and pressure loss prediction of a blade coolant passage (2013)
Presentation / Conference Contribution

This paper studies the effect of mesh topologies such as hybrid and structured meshes on the evaluation of wall heat transfer coefficient (HTC) and pressure loss of a blade cooling passage. An experimental model is chosen; it has five-row of stream w... Read More about Effect of mesh topologies on wall heat transfer and pressure loss prediction of a blade coolant passage.

Evaluation of wall heat transfer in blade trailing-edge cooling passage (2013)
Presentation / Conference Contribution

Model configurations of a blade trailing-edge internal cooling passage with staggered elliptic pin-fins in streamwise and spanwise are adopted for numerical investigation using computational fluid dynamics (CFD). Grid refinement study is performed at... Read More about Evaluation of wall heat transfer in blade trailing-edge cooling passage.

Investigating the effects on the low speed response of a pressure charged IC engine through the application of a twin-entry turbine housing (2013)
Presentation / Conference Contribution

In this study, one-dimensional analysis using AVL Boost software has been carried out on a series of compression and spark ignition engines utilizing a manufacturer fitted single-entry turbocharger and a modified twin-entry unit, the latter adopting... Read More about Investigating the effects on the low speed response of a pressure charged IC engine through the application of a twin-entry turbine housing.

Multi-block high-order dns code development for jet in turbulent cross-flow simulation (2012)
Journal Article

A multi-block high-order finite-difference direct numerical simulation (DNS) code has been developed for studying turbulent flows over complex geometries. A global mapping technique is adopted and applied to a multi-block domain arrangement, in which... Read More about Multi-block high-order dns code development for jet in turbulent cross-flow simulation.

Numerical study of unsteady airflow phenomena in a ventilated room (2012)
Journal Article

Numerical simulation of airflow in an indoor environment has been carried out for forced, natural, and mixed convection modes, respectively, by using the computational fluid dynamics (CFD) approach of solving the Reynolds-averaged Navier-Stokes equat... Read More about Numerical study of unsteady airflow phenomena in a ventilated room.

Numerical study of unsteady airflow phenomena in a ventilated room (2012)
Presentation / Conference Contribution

Numerical simulation of airflow in an indoor environment has been carried out for forced, natural and mixed convection modes respectively, by using computational fluid dynamics (CFD) approach of solving the Reynolds-averaged Navier-Stokes equations.... Read More about Numerical study of unsteady airflow phenomena in a ventilated room.

Numerical simulation of a turbulent flow over an axisymmetric hill (2012)
Presentation / Conference Contribution

Simulation of a turbulent °ow over an axisymmetric hill has been carried out to study three-dimensional °ow separation and reattachment that occur on the lee-side of the geome-try. A total of four simulations are considered at low Reynolds number of... Read More about Numerical simulation of a turbulent flow over an axisymmetric hill.

CFD prediction and experimental measurement of blade water coverage in a diesel turbocharger (2012)
Journal Article

A turbocharger unit for diesel engine is often equipped with a built-in online water washing system and its performance is not always satisfactory because of efficiency declination due to deposit accumulated on blade surfaces not being washed away. I... Read More about CFD prediction and experimental measurement of blade water coverage in a diesel turbocharger.

Effect of jet inclination angle and hole exit shape on vortical flow structures in low-reynolds number jet in cross-flow (2012)
Journal Article

Numerical studies have been performed to visualize vortical flow structures emerged from jet cross-flow interactions. A single square jet issuing perpendicularly into a cross-flow was simulated first, followed by two additional scenarios, that is, in... Read More about Effect of jet inclination angle and hole exit shape on vortical flow structures in low-reynolds number jet in cross-flow.

Flow topology and secondary separation modelling at crossing shock wave/turbulent boundary layer interaction conditions (2012)
Journal Article

Steady RANS modelling has been carried out for a symmetrical double-sharp-fin configuration with an inclination angle 15°, Mach 3.92 and Reynolds number Reδ = 3.08 x 105. Grid refinement and turbulence model influences using ω-based Reynolds Stress m... Read More about Flow topology and secondary separation modelling at crossing shock wave/turbulent boundary layer interaction conditions.

Flow topology of symmetric crossing shock wave boundary layer interactions (2012)
Book Chapter

Three-dimensional crossing-shock-wave and turbulent boundary-layer interactions can generate intense wall heat flux rates, high pressure levels, and large-scale flow separations on high-speed vehicle surfaces. To reproduce such complex flow physics,... Read More about Flow topology of symmetric crossing shock wave boundary layer interactions.

Shock induced separating flows in scramjet intakes (2012)
Journal Article

Shock induced separating flows in a scramjet intake has been studied by using a computational fluid dynamics approach. A configuration of scramjet intake geometry consisting of two exterior compression ramps, followed by a subsequent inlet and interi... Read More about Shock induced separating flows in scramjet intakes.

Experimental measurements and CFD predictions of blade water coverage in a diesel turbocharger (2011)
Presentation / Conference Contribution

Improved one-dimensional unsteady modeling of thermally choked ram accelerator in sub-detonative velocity regime (2011)
Presentation / Conference Contribution

Improved one-dimensional unsteady modelling of thermally choked ram accelerator in sub-detonative velocity regime (2011)
Journal Article

Improved one-dimensional unsteady modeling of thermally choked ram accelerator in subdetonative velocity regime (2011)
Journal Article

The subdetonative propulsion mode using thermal choking has been studied with a one-dimensional (1D) real gas model that included projectile acceleration. Numerical results from a control volume analysis that accounted for unsteady flow effects estab... Read More about Improved one-dimensional unsteady modeling of thermally choked ram accelerator in subdetonative velocity regime.

Numerical study of gaseous reactive flow over a ram accelerator projectile in subdetonative velocity regime (2011)
Presentation / Conference Contribution

Computational fluid dynamics solutions of the Reynolds Averaged Navier-Stokes equations have been used to numerically predict the thrust of a thermally choked ram accelerator in subdetonative velocity regime. Studies were focused on a projectile oper... Read More about Numerical study of gaseous reactive flow over a ram accelerator projectile in subdetonative velocity regime.

Computational study of hole shape effect on film cooling performance (2011)
Presentation / Conference Contribution

Film cooling effectiveness has been studied by using a computational approach based on solving the Reynolds-averaged Navier-Stokes equations. A wind tunnel test configuration is considered with a total of four cooling hole geometries as a cylindrical... Read More about Computational study of hole shape effect on film cooling performance.

Increasing low speed engine response of a downsized CI engine equipped with a twin-entry turbocharger (2011)
Presentation / Conference Contribution

Direct numerical simulation of single and multiple square jets in cross-flow (2011)
Journal Article

Direct numerical simulations (DNSs) have been carried out for single and multiple square jets issuing normally into a cross-flow, with the primary aim of studying the flow structures and interaction mechanisms associated with the jet in cross-flow (J... Read More about Direct numerical simulation of single and multiple square jets in cross-flow.

Validation study of convective airflow in an empty room (2011)
Presentation / Conference Contribution

Numerical analysis of wall properties in crossing-shock-wave/turbulent-boundary-layer interactions (2011)
Presentation / Conference Contribution

Numerical simulation of convective airflow in an empty room (2011)
Journal Article

Numerical simulation of airflow inside an empty room has been carried out for a forced convection, a natural convection and a mixed convection respectively, by using a computational fluid dynamics approach of solving the Reynolds-averaged Navier-Stok... Read More about Numerical simulation of convective airflow in an empty room.

A review of novel turbocharger concepts for enhancements in energy efficiency (2011)
Journal Article

Turbochargers are extensively used throughout the automotive industry as they can enhance the output of an internal combustion (IC) engine without the need to increase its cylinder capacity. The application of such a mechanical device enables automot... Read More about A review of novel turbocharger concepts for enhancements in energy efficiency.

Numerical analysis of wall properties in crossing-shock-wave/turbulent-boundary-layer interactions (2011)
Journal Article

The effect of hole shape on blade cooling effectiveness (2011)
Journal Article

A review of novel turbocharger concepts for enhancements in energy efficiency (2010)
Presentation / Conference Contribution

Development of a multi-block high-order DNS code for turbulent flow simulations (2010)
Presentation / Conference Contribution

Measurement and prediction of water coverage of blade ring in a turbocharger (2010)
Presentation / Conference Contribution

Simulation of gas-water two-phase flow in diesel turbocharger (2010)
Book Chapter

Numerical study of hole shape effect on blade cooling effectiveness (2010)
Presentation / Conference Contribution

Numerical study of hole shape effect on blade adiabatic cooling effectiveness has been carried out on four geometry models comprising a standard cylindrical hole, a cylindrical hole with an upstream ramp, a shaped diffuser, and a double console slot.... Read More about Numerical study of hole shape effect on blade cooling effectiveness.

Thrust prediction in thermally choked ram accelerator (2010)
Presentation / Conference Contribution

Effect of hole shape on blade cooling effectiveness (2010)
Presentation / Conference Contribution

One-dimensional performance modelling of the ram accelerator in sub-detonative regime (2010)
Journal Article

A one-dimensional performance analysis code has been developed at the ”Laboratoire de Combustion et de D´etonique” to predict the thrust in the thermally choked ram accelerator propulsive mode. This research code incorporates the following equations... Read More about One-dimensional performance modelling of the ram accelerator in sub-detonative regime.

Equations of state for 1-D modelling of ram accelerator thrust in sub-detonative propulsion mode (2010)
Journal Article

A one-dimentional performance analysis code has been developed at eh Laboratoire de Combustion et de Detonique to predict the thrust in the thermally choked ram accelerator propulsion mode. This code includes the real gas effect in steady calculation... Read More about Equations of state for 1-D modelling of ram accelerator thrust in sub-detonative propulsion mode.

Equations of state for 1-D modelling of ram accelerator thrust in thermally choked propulsion mode (2010)
Journal Article

A one-dimensional performance analysis code has been developed at the Laboratoire de Combustion et de Détonique to predict the thrust in the thermally choked ram accelerator propulsion mode. This code includes the real gas effect in steady state calc... Read More about Equations of state for 1-D modelling of ram accelerator thrust in thermally choked propulsion mode.

The effect of variable gas property on axial turbine performance (2010)
Journal Article

Industrial gas turbine flow has been evaluated by using computational fluid dynamics with a variable gas property model. The study of a three-stage turbine model has revealed some considerable variable gas property effects on the engine performance.... Read More about The effect of variable gas property on axial turbine performance.

The effect of hole shape on blade cooling effectiveness (2010)
Journal Article

The high temperature conditions under which turbine blades operate pose a constraint on their service lifetime. One industrial solution is to apply the film cooling and the cooling effectiveness is generally determined by flow conditions, cooling hol... Read More about The effect of hole shape on blade cooling effectiveness.

Simulation of gas water two-phase flow in diesel turbocharger (2009)
Presentation / Conference Contribution

Numerical simulation of a gas water two-phase flow in Diesel Turbocharger has been carried out using computational fluid dynamics solution of the Eulerian Reynolds-averaged Navier-Stokes equations for the continuum gas phase and the Lagrangian partic... Read More about Simulation of gas water two-phase flow in diesel turbocharger.

Numerical simulation of laminar circular and noncircular jets in cross-flow (2009)
Book Chapter

Numerical simulation of heat transfer in rectangular microchannel (2009)
Journal Article

Numerical simulation of heat transfer in a high aspect ratio rectangular microchannel with heat sinks has been conducted, similar to an experimental study. Three channel heights measuring 0.3 mm, 0.6mmand 1mmare considered and the Reynolds number var... Read More about Numerical simulation of heat transfer in rectangular microchannel.

CFD modelling of water injection for turbine blade cleaning (2009)
Presentation / Conference Contribution

CFD modeling of water injection for turbine blade cleaning has been carried out to predict the water coverage on a stationary blade row, which will enable a better understanding on the interactions between hot-air flow and cold-water droplets. A gene... Read More about CFD modelling of water injection for turbine blade cleaning.

Direct numerical simulation of multiple jets in cross-flow (2009)
Presentation / Conference Contribution

Direct numerical simulation has been performed to study flow interactions in multiple jets in cross-flow. Configurations considered are twin jets side-by-side and triple jets in tandem. Computations are carried out at the jet to cross-flow velocity r... Read More about Direct numerical simulation of multiple jets in cross-flow.

Direct simulation of flow interactions in multiple jets in cross-flow (2009)
Journal Article

Numerical investigation of system pressure effect on heat transfer of supercritical water flows in a horizontal round tube (2008)
Journal Article

The system pressure effect on heat transfer of supercritical water (SCW) flows in a horizontal round tube has been studied by using computational fluid dynamics (CFD) technique, aiming for extending previous researches on the buoyancy effect by furth... Read More about Numerical investigation of system pressure effect on heat transfer of supercritical water flows in a horizontal round tube.

The CFD modelling of water injection flow in turbocharger (2008)
Presentation / Conference Contribution

CFD modelling of water injection flow for turbine blades cleaning (2008)
Presentation / Conference Contribution

CFD investigation of heat transfer in supercritical water-cooled flow through 3X3 fuel rod bundles (2008)
Presentation / Conference Contribution

Numerical visualization of vortex flow behavior in square jets in cross-flow (2008)
Journal Article

Direct numerical simulations have been performed in this study to visualize the flow behavior of single and multiple square jets issuing normally into a cross-flow. Three configurations are considered, a single jet located in the centre of the domain... Read More about Numerical visualization of vortex flow behavior in square jets in cross-flow.

Computational prediction of local distorted flow in turbocharger (2007)
Presentation / Conference Contribution

Published in: F.G. Zhuang, J.C. Li (2008) New Trends in Fluid Mechanics Research:

Unsteady RANS calculation of flow over Ahmed car model (2007)
Presentation / Conference Contribution

Large-eddy simulation and control of flow separation over Ahmed car model (2007)
Presentation / Conference Contribution

Computational study of flow over generic fan-wing airfoil (2007)
Journal Article

Computational study of flow over generic fan-wing airfoil (2007)
Journal Article

Purpose - The paper seeks to perform a detailed numerical study of flow over a generic fan-wing airfoil and also attempts to modify the geometry for the improvement of the aerodynamic performance. Design/methodology/approach - Advanced computational... Read More about Computational study of flow over generic fan-wing airfoil.

The effect of Mach number on unstable disturbances in shock/boundary-layer interactions (2007)
Journal Article

On reynolds number and scaling effects in microchannel flows (2007)
Journal Article

This paper presents a numerical study of the Reynolds number and scaling effects in microchannel flows. The configuration includes a rectangular, high-aspect ratio microchannel with heat sinks, similar to an experimental setup. Water at ambient tempe... Read More about On reynolds number and scaling effects in microchannel flows.

The effect of Mach number on unstable disturbances in shock/boundary-layer interactions (2007)
Journal Article

The effect of Mach number on the growth of unstable disturbances in a boundary layer undergoing a strong interaction with an impinging oblique shock wave is studied by direct numerical simulation and linear stability theory (LST). To reduce the numbe... Read More about The effect of Mach number on unstable disturbances in shock/boundary-layer interactions.

Numerical simulation of heat transfer in rectangular microchannel (2006)
Presentation / Conference Contribution

Numerical simulation of microchannel cooling and heat transfer (2006)
Presentation / Conference Contribution

Direct numerical simulation of jets in cross-flow (2006)
Journal Article

Direct numerical simulation (DNS) of jets in cross-flow (JICF) has been carried out in this study, aiming for the investigation of vortex structure formation and evolution process associated with JICF. A recently developed DNS code is used, which sol... Read More about Direct numerical simulation of jets in cross-flow.

Direct numerical simulation of jets in cross-flow (2006)
Presentation / Conference Contribution

On the response of shock-induced separation bubble to small amplitude disturbances (2005)
Presentation / Conference Contribution

Numerical simulations of an oblique shock interacting with a compressible laminar boundary layer are reported. The Mach number ranges from 2 to 6.85, while the Reynolds number based on the distance to the impingement location is fixed at 3 × 105. All... Read More about On the response of shock-induced separation bubble to small amplitude disturbances.

Large-eddy simulation of transonic turbulent flow over a bump (2003)
Journal Article

Transonic turbulent boundary-layer flow over a circular-arc bump has been computed by high-resolution large-eddy simulation of the compressible Navier-Stokes equations. The inflow turbulence was prescribed using a new technique, in which known dynami... Read More about Large-eddy simulation of transonic turbulent flow over a bump.

Structure and Energetics of a Turbulent Trailing Edge Flow (2003)
Journal Article

Results from a direct numerical simulation (DNS) of turbulent flow over a rectangular trailing edge geometry are used to study energy transfers in detail. The numerical procedure employs a separate boundary layer simulation which is used to generate... Read More about Structure and Energetics of a Turbulent Trailing Edge Flow.

Simulation and modelling of turbulent trailing-edge flow (2002)
Journal Article

Computations of turbulent trailing-edge flow have been carried out at a Reynolds number of 1000 (based on the free-stream quantities and the trailing-edge thickness) using an unsteady 3D Reynolds-Averaged Navier-Stokes (URANS) code, in which two-equa... Read More about Simulation and modelling of turbulent trailing-edge flow.

Direct numerical simulation of turbulent trailing-edge flow with base flow control (2002)
Journal Article

Simulation and modelling of turbulent trailing-edge flow (2002)
Journal Article

Direct numerical simulation of turbulent trailing-edge flow with base flow control (2002)
Journal Article

Direct numerical simulation has been carried out for turbulent flow over a rectangular trailing edge at a Reynolds number of 1 × 103 (based on the freestream quantities and the trailing-edge thickness) and ratio of boundary-layer displacement thickne... Read More about Direct numerical simulation of turbulent trailing-edge flow with base flow control.

Direct numerical simulation of turbulent flow over a rectangular trailing edge (2001)
Journal Article

This paper describes a direct numerical simulation (DNS) study of turbulent flow over a rectangular trailing edge at a Reynolds number of 1000, based on the freestream quantities and the trailing edge thickness h; the incoming boundary layer displace... Read More about Direct numerical simulation of turbulent flow over a rectangular trailing edge.

High order resolution and parallel implementation on unstructured grids (1996)
Thesis