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Wedged Gurney Flap for performance improvement of vertical axis wind turbines (2023)
Presentation / Conference
Perdana Syawitri, T., Yao, Y., Yao, J., Chandra, B., & Kultsum, U. (2023, August). Wedged Gurney Flap for performance improvement of vertical axis wind turbines. Paper presented at The 6th International Conference on Mechanical Engineering, ICOME 2023, Bali, Indonesia

The study evaluates the wedged Gurney Flap (GF) on a three-straight-bladed Vertical Axis Wind Turbine (VAWT) using Computational Fluid Dynamics (CFD) simulations. The analysis considers the rotating effect of the blades at three different Tip Speed R... Read More about Wedged Gurney Flap for performance improvement of vertical axis wind turbines.

Aerodynamics of a CRM joined-wing configuration at transonic speeds (2023)
Presentation / Conference
Hanman, P., Yao, Y., & Bouferrouk, A. (2023, March). Aerodynamics of a CRM joined-wing configuration at transonic speeds. Paper presented at 57th 3AF International Conference on Applied Aerodynamics, Bordeaux, France

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
Zheltovodov, A. A., Fang, J., & Yao, Y. (2022, August). Validation of shock-wave/turbulent boundary-layer interaction flows by high-fidelity numerical simulations. Paper presented at The 21st International Conference on the Methods of Aerophysical Research (ICMAR 2022), Russia and online

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.

An Investigation of a Morphing Flapped Wing (2020)
Presentation / Conference
Madi, F., Kanaa, Z., Narayan, P., & Yao, Y. (2020, February). An Investigation of a Morphing Flapped Wing. Paper presented at Aerospace Europe Conference (AEC2020), Bordeaux, France

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 GIS-MOPSO integrated method for optimal design of grid-connected HRES for educational buildings (2019)
Presentation / Conference
Mokhtara, C., Negrou, B., Settou, N., Bouferrouk, A., Yao, Y., & Messaoudi, D. (2019, November). A GIS-MOPSO integrated method for optimal design of grid-connected HRES for educational buildings. Paper presented at 3rd International Symposium on Sustainable Hydrogen, Algiers

 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.

Influence of non-iterative time-advancement schemes on the aerodynamic prediction of pitching airfoils using dynamic mesh (2019)
Presentation / Conference
Abdessemed, C., Yao, Y., Bouferrouk, A., & Narayan, P. (2019, June). Influence of non-iterative time-advancement schemes on the aerodynamic prediction of pitching airfoils using dynamic mesh. Paper presented at 8th International Symposium on Physics of Fluids (ISPF8), Xian, China

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
Abdessemed, C., Yao, Y., Bouferrouk, A., & Narayan, P. (2019, March). Flow response to rapid morphing flap deflection. Paper presented at 54th 3AF International Conference on Applied Aerodynamics, Paris - France

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
Syawitri, T. P., Yao, Y., Yao, J., & Chandra, B. (2019, March). Assessment of stress-blended eddy simulation model for accurate prediction of three-straight-bladed vertical axis wind turbine performance. Paper presented at 54th 3AF International Conference on Applied Aerodynamics, Paris, France

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.

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
Syawitri, T., Yao, Y., & Chandra, B. (2018, October). A review of current technical development in vertical axis wind turbine technologies and their braking system for low speed, urban and offshore areas application. Paper presented at International Conference of Global Warming and Climate Change 2018, Bangkok, Thailand

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.

CFD simulation of three-straight-bladed vertical axis wind turbine at low tip speed ratios (2018)
Presentation / Conference
Syawitri, T., Yao, Y., Chandra, B., & Yao, J. (2018, October). CFD simulation of three-straight-bladed vertical axis wind turbine at low tip speed ratios. Paper presented at International Conference of Global Warming and Climate Change 2018, Bangkok, Thailand

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.

Further development of a variable camber morphing mechanism using the direct control airfoil geometry concept (2018)
Presentation / Conference
Loudon, K., Bouferrouk, A., Coleman, B., Hughes, F., Lewis, B., Parsons, B., …Yao, Y. (2018, July). Further development of a variable camber morphing mechanism using the direct control airfoil geometry concept. Paper presented at International Symposium of Sustainable Aviation, Rome, Italy

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.

Slat broadband noise prediction of multi-element 30P30N airfoil by a hybrid RANS-LES method (2018)
Presentation / Conference
Peng, T., Yao, Y., & Zhu, Q. (2018, March). Slat broadband noise prediction of multi-element 30P30N airfoil by a hybrid RANS-LES method. Paper presented at 53rd 3AF International Conference on Applied Aerodynamics, Salon de Provence, France

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
Abdessemed, C., Yao, Y., Bouferrouk, A., & Narayan, P. P. (2018, March). Aeroacoustics investigation of a harmonically morphing trailing edge flap. Paper presented at 53rd 3AF International Conference on Applied Aerodynamics, Salon de Provence, France

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.

Equations of state for thrust modeling of ram accelerator at different bores (2017)
Presentation / Conference
Bauer, P., Bengherbia, T., Yao, Y., Knowlen, C., Bruckner, A., & Giraud, M. (2017, September). Equations of state for thrust modeling of ram accelerator at different bores. Presented at Italian Association of Aeronautics and Astronautics XXIV International Conference, Palermo – Enna, Italy

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
Fang, J., Gao, Y., Yao, Y., Liu, Y., & Lu, L. (2017, September). Direct numerical simulation of a tip-leakage vortex model in a planar duct with a longitudinal slit. Poster presented at UKTC Annual Review, London, England

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
Yao, J., & Yao, Y. (2017, July). Zeolite supported Pd electrocatalyst nano-particle characterization. Paper presented at ANM2017 Int conf. on advanced nano materials, Aveiro, Portugal

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.

Ex-situ exafs investigation of zeolite supported pt electrocatalyst structure (2017)
Presentation / Conference
Yao, J., & Yao, Y. (2017, June). Ex-situ exafs investigation of zeolite supported pt electrocatalyst structure. Paper presented at The Seventh International Symposium on Physics of Fluids (ISPF7), Guiyang, China

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
Ni, W., Lu, L., Fang, J., Yao, Y., & Moulinec, C. (2017, June). Large-scale secondary vortices in the turbulent channel flow induced by active wall actuations. Paper presented at The Seventh International Symposium on Physics of Fluids (ISPF7), Guiyang, China

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
Actuations: Application to the Turbulent Channel Flow. Paper presented at Parallel CFD Conference 2017, Glasgow, UK

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.

Unsteady parametrization of a morphing wing design for improved aerodynamic performance (2017)
Presentation / Conference
Abdessemed, C., Yao, Y., Narayan, P., & Bouferrouk, A. (2017, March). Unsteady parametrization of a morphing wing design for improved aerodynamic performance. Paper presented at 52nd 3AF International Conference on Applied Aerodynamics, Lyon, France

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
Ouyang, B., Yao, Y., & Bouferrouk, A. (2017, March). DES prediction of a 3-element high-lift airfoil with a blown flap. Presented at 52nd 3AF International Conference on Applied Aerodynamics, Lyon, France

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.

U-model enhanced control of nonminimum-phase dynamic systems (2016)
Presentation / Conference
Qiu, J., Zhu, Q., Nibouche, M., & Yao, Y. (2016, November). U-model enhanced control of nonminimum-phase dynamic systems. Paper presented at 8th International Conference on Modelling, Identification and Control (ICMIC-2016), Algiers, Algeria

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.

Numerical investigation of wavy-annular airwater two-pase flow in a small horizontal pipe (2016)
Presentation / Conference
Arini, A., Yao, J., Gordon, T., & Yao, Y. (2016, September). Numerical investigation of wavy-annular airwater two-pase flow in a small horizontal pipe. Paper presented at EFCM11 11th European Fluid Mechanics Conference, Seville, Spain

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
Fang, J., Yang, G., Yao, Y., Liu, C., & Lu, L. (2016, September). Shock-wave/boundary layer interaction control using spark-jet and micro-vortex generator. Poster presented at UKTC Annual Workshop, Cambridge, UK

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
Castagna, J., & Yao, Y. (2016, September). On the effect of the distance between longitudinally ridged walls in a turbulent channel flow. Poster presented at UKTC Annual Workshop, Cambridge, UK

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
Ni, W., Fang, J., Yao, Y., Moulinec, C., & Lu, L. (2016, September). Large-scale turbulent secondary flows induced by spanwise alternatively distributed strips control. Poster presented at UKTC Annual Workshop, Cambridge, UK

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.

DES prediction of a novel high-lift device step 1: Steady blowing (2016)
Presentation / Conference
Ouyang, B., Yao, Y., & Bouferrouk, A. (2016, July). DES prediction of a novel high-lift device step 1: Steady blowing. Poster presented at 2016 Applied Aerodynamics, Bristol, UK

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.

Development and testing of a variable camber morphing wing mechanism (2016)
Presentation / Conference
Evans, C., Harmer, M., Marks, O., Tiley, S., Willis, T., Bouferrouk, A., & Yao, Y. (2016, May). Development and testing of a variable camber morphing wing mechanism. Paper presented at International Symposium of Sustainable Aviation, Istanbul, Turkey

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
Ouyang, B., Yao, Y., & Bouferrouk, A. (2016, May). DES prediction of near stall performance of a high lift airfoil. Paper presented at International Symposium of Sustainable Aviation, Istanbul, Turkey

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.

Large-eddy simulation of shock-induced flow separation control using SparkJet concept (2016)
Presentation / Conference
Yang, G., Yao, Y., Fang, J., Gan, T., & Lu, L. (2016, January). Large-eddy simulation of shock-induced flow separation control using SparkJet concept. Paper presented at 54th AIAA Aerospace Sciences Meeting, San Diego, California, USA

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.

Multistep simulation for three-dimensional ice accretion on an aircraft wing (2016)
Presentation / Conference
Huang, J., Cao, Y., Yao, Y., & Yao, J. (2016, January). Multistep simulation for three-dimensional ice accretion on an aircraft wing. Paper presented at 54th AIAA Aerospace Sciences Meeting, San Diego, California

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.

Numerical investigation on two streamline-traced busemann inlet-isolators (2016)
Presentation / Conference
Xing, F., Xiaoyuan, F., Can, L., & Yao, Y. (2016, January). Numerical investigation on two streamline-traced busemann inlet-isolators. Paper presented at 54th AIAA Aerospace Sciences Meeting, San Diego, California, USA

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.

Large-eddy simulation of a three-dimensional shock-wave/turbulent boundary layer interaction of a single-fin (2015)
Presentation / Conference
Fang, J., Yao, Y., Zheltovodov, A. A., & Lu, L. (2015, September). Large-eddy simulation of a three-dimensional shock-wave/turbulent boundary layer interaction of a single-fin. Paper presented at UKTC Annual Workshop, Southampton, UK

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.

CFD of air/water two-phase flow in small horizontal pipe (2015)
Presentation / Conference
Yao, J., & Yao, Y. (2015, July). CFD of air/water two-phase flow in small horizontal pipe. Paper presented at The First Chinese International Conference on CFD, Mianyang, China

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
Yao, Y., & Zheng, Y. (2015, July). DNS of transitional and turbulent flow simulations. Presented at The First Chinese International Conference on CFD, Mianyang, China

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.

Assessment of the low-dissipation monotonicity-preserving scheme in a series of DNS of shock-wave/turbulent boundary layer interactions (2015)
Presentation / Conference
Fang, J., Yao, Y., & Lu, L. (2015, January). Assessment of the low-dissipation monotonicity-preserving scheme in a series of DNS of shock-wave/turbulent boundary layer interactions. Paper presented at The 9th International Conference on Computational Physics (ICCP9), Singapore

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
Khali, E. H., & Yao, Y. (2015, January). Mixing flow characteristics for a transverse sonic jet injecting into a supersonic crossflow. Paper presented at AIAA 2015 Sci-Tech conference, Kissimmee, Florida, USA

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
Fang, J., Yao, Y., Zheltovodov, A. A., & Lu, L. (2015, January). Large-eddy simulation of a three-dimensional hypersonic shock wave turbulent boundary layer interaction of a single fin. Paper presented at AIAA 2015 Sci-Tech conference, Kissimmee, Florida, USA

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.

Direct numerical simulation of supersonic flows passing a backward step (2014)
Presentation / Conference
Yao, Y., Fang, J., Zheltovodov, A. A., & Lu, L. (2014, September). Direct numerical simulation of supersonic flows passing a backward step. Presented at UK Turbulence Consortium Workshop, Imperial College, London

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.

Proton modified Pt zeolite fuel cell electrocatalysts (2014)
Presentation / Conference
Yao, J., Yao, Y., & Mirzaii, H. (2014, August). Proton modified Pt zeolite fuel cell electrocatalysts. Paper presented at World Renewable Energy Congress WREC XIII, London, UK

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
a NACA0015 airfoil. Paper presented at The 8th International Conference on Computational Fluid Dynamics (ICCFD8), Chengdu, China

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
Fang, J., Yao, Y., Lu, L., & Zheltovodov, A. A. (2014, June). Direct numerical simulation of supersonic turbulent flow in an expansion-compression corner at mach=2.9. Paper presented at ICMAR 2014, Novosibirsk, Russia

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
Fang, J., Yao, Y., Zheltovodov, A. A., & Lu, L. (2014, June). Numerical simulations of two-dimensional and three-dimensional shock wave/turbulent boundary layer interactions. Paper presented at ICMAR 2014, Novosibirsk, Russia

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.

Validation study of convective airflow in an empty room (2011)
Presentation / Conference
Horikiri, K., & Yao, Y. (2011, March). Validation study of convective airflow in an empty room. Paper presented at 2nd INEEE Conference: Energy, Environment, Devices, Systems, Communications, Computers (EEDSCC '11), Venice, Italy

Thrust prediction in thermally choked ram accelerator (2010)
Presentation / Conference
Bengherbia, T., Yao, Y., Bauer, P., & Knowlen, C. (2010, January). Thrust prediction in thermally choked ram accelerator. Paper presented at AIAA 48th Aerospace Sciences Meeting

Simulation of gas water two-phase flow in diesel turbocharger (2009)
Presentation / Conference
Yao, J., Yao, Y., Mason, P., Zhang, T., Heyes, F. J. G., & Roach, P. E. (2009, July). Simulation of gas water two-phase flow in diesel turbocharger. Paper presented at The 6th International Symposium on Multiphase Flow, Heat Mass Transfer and Energy Conversion, Xi'an, China

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.

The CFD modelling of water injection flow in turbocharger (2008)
Presentation / Conference
Yao, J., Yao, Y., Mason, P., & Zhang, T. (2008, July). The CFD modelling of water injection flow in turbocharger. Paper presented at The Fifth International Conference on Computational Fluid Dynamics (ICCFD5), Seoul, Korea

Computational prediction of local distorted flow in turbocharger (2007)
Presentation / Conference
Yao, J., Yao, Y., Manson, P. J., Zhang, T., Heyes, F. J. G., & Roach, P. E. (2007, August). Computational prediction of local distorted flow in turbocharger. Paper presented at 5th International Conference on Fluid Mechanics, Shanghai, China

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
Yao, J., Mouzoun, O., Yao, Y., & Mason, P. (2007, June). Unsteady RANS calculation of flow over Ahmed car model. Paper presented at IUTAM Symposium on Unsteady Separated Flows and their Control, Corfu, Greece

Numerical simulation of heat transfer in rectangular microchannel (2006)
Presentation / Conference
Yao, J., Patel, M. K., Yao, Y., & Mason, P. J. (2006, September). Numerical simulation of heat transfer in rectangular microchannel. Paper presented at European Conference on Computational Fluid Dynamics, TU Delft, The Netherlands

Direct numerical simulation of jets in cross-flow (2006)
Presentation / Conference
Yao, Y., Petty, D., Barrington, P., Yao, J., & Mason, P. (2006, June). Direct numerical simulation of jets in cross-flow. Paper presented at 13th Annual Conference of the CFD-Society-of-Canada