Outputs (69)

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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 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.

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.

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.

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

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.

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

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.