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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.

Numerical simulation and experimental investigation of the effect of three-layer annular coaxial shroud on gas-powder flow in laser cladding (2022)
Journal Article
Lyu, P., Jin, L., Yan, B., Zhu, L., Yao, J., & Jiang, K. (2022). Numerical simulation and experimental investigation of the effect of three-layer annular coaxial shroud on gas-powder flow in laser cladding. Journal of Manufacturing Processes, 84, 457-468. https://doi.org/10.1016/j.jmapro.2022.10.019

Laser cladding is a notable metal additive manufacturing (AM). The outstanding benefit of laser cladding is that the cladding process is more flexible and it can be completed in an open environment. However, oxidation phenomenon of active metals such... Read More about Numerical simulation and experimental investigation of the effect of three-layer annular coaxial shroud on gas-powder flow in laser cladding.

Unsteady flow oscillations in a 3-D ventilated model room with convective heat transfer (2022)
Journal Article
Yao, J., & Yao, Y. (2022). Unsteady flow oscillations in a 3-D ventilated model room with convective heat transfer. Fluids, 7(6), Article 192. https://doi.org/10.3390/fluids7060192

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
Yao, J., & Yao, Y. (2022). Transient CFD modelling of air–water two-phase annular flow characteristics in a small horizontal circular pipe. Fluids, 7(6), Article 191. https://doi.org/10.3390/fluids7060191

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
Syawitri, T. P., Yao, Y., Yao, J., & Chandra, B. (2022). 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. Wind Engineering, 46(5), 1487-1510. https://doi.org/10.1177/0309524x221084980

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
Syawitri, T. P., Yao, Y., Yao, J., & Chandra, B. (2022). A review on the use of passive flow control devices as performance enhancement of lift-type vertical axis wind turbines. Wiley Interdisciplinary Reviews: Energy and Environment, 11(4), e435. https://doi.org/10.1002/wene.435

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.

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
Syawitri, T. P., Yao, Y., Yao, J., & Chandra, B. (2022). Geometry optimisation of vertical axis wind turbine with Gurney flap for performance enhancement at low, medium and high ranges of tip speed ratios. Sustainable Energy Technologies and Assessments, 49, Article 101779. https://doi.org/10.1016/j.seta.2021.101779

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.

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
Syawitri, T. P., Yao, Y. F., Chandra, B., & Yao, J. (2021). 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. Renewable Energy, 168, 247-269. https://doi.org/10.1016/j.renene.2020.12.045

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.

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
Chen, L., Liu, K., Yao, Y., Yao, J., Su, Z., & Luo, G. (2020). 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. International Journal for Computational Methods in Engineering Science and Mechanics, 21(5), 231-242. https://doi.org/10.1080/15502287.2020.1809554

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.

Assessment of stress-blended eddy simulation model for accurate performance prediction of vertical axis wind turbine (2020)
Journal Article
Syawitri, T. P., Yao, Y., Yao, J., & Chandra, B. (2021). Assessment of stress-blended eddy simulation model for accurate performance prediction of vertical axis wind turbine. International Journal of Numerical Methods for Heat and Fluid Flow, 31(2), 655-673. https://doi.org/10.1108/HFF-09-2019-0689

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
Syawitri, T. P., Yao, Y. F., Yao, J., & Chandra, B. (2020). The effect of gurney flap on flow characteristics of vertical axis wind turbine. International Journal of Modern Physics B, 34(14n16), Article 2040107. https://doi.org/10.1142/S0217979220401074

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.

Surface flow modification of aerofoils for automotive racing car applications (2020)
Journal Article
Allarton, R., Yao, J., Clifford, T., Hitchborn, B., Parker, L. J., & Shaw, J. (2020). Surface flow modification of aerofoils for automotive racing car applications. International Journal of Modern Physics B, 34(14n16), https://doi.org/10.1142/s0217979220400962

An aerofoil commonly used in aerospace engineering to produce lift is also employed in the motor sport industry to produce downforce for improving traction during cornering. This paper investigates aerofoil surface modification through 'golf ball dim... Read More about Surface flow modification of aerofoils for automotive racing car applications.

Detached eddy simulation of blade trailing-edge cutback cooling performance at various ejection slot angles (2019)
Journal Article
Effendy, M., Yao, Y., Yao, J., & Marchant, D. R. (2019). Detached eddy simulation of blade trailing-edge cutback cooling performance at various ejection slot angles. International Journal of Heat and Fluid Flow, 80, Article 108487. https://doi.org/10.1016/j.ijheatfluidflow.2019.108487

© 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.

Pin-fin shape and orientation effects on wall heat transfer predictions of gas turbine blade (2019)
Conference Proceeding
Effendy, M., Yao, Y., Yao, J., & Marchant, D. R. (2019). Pin-fin shape and orientation effects on wall heat transfer predictions of gas turbine blade. In EXPLORING RESOURCES, PROCESS AND DESIGN FOR SUSTAINABLE URBAN DEVELOPMENT: Proceedings of the 5th International Conference on Engineering, Technology, and Industrial Application (ICETIA) 2018 (020008). https://doi.org/10.1063/1.5112392

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.

Surface flow modification of aerofoils for automative racing car application (2019)
Presentation / Conference
Allarton, R., Cliford, T., Hitchborn, B., Parker, L., Shaw, J., & Yao, J. (2019, June). Surface flow modification of aerofoils for automative racing car application. Paper presented at The Eighth International Symposium on Physics of Fluid (ISPF8), Xian, China

An aerofoil which is commonly used in aerospace engineering to produce lift is also employed in the motorsport industry to produce downforce for improving traction in cornering. This paper investigates aerofoil surface modification through ‘golf ball... Read More about Surface flow modification of aerofoils for automative racing car application.

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.

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.

Zeolite supported Pd electrocatalyst nanoparticle characterization (2018)
Journal Article
Yao, J., & Yao, Y. (2019). Zeolite supported Pd electrocatalyst nanoparticle characterization. International Journal of Hydrogen Energy, 44(1), 287-294. https://doi.org/10.1016/j.ijhydene.2018.02.110

© 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.

Optimization of air distribution mode coupled interior design for civil aircraft cabin (2018)
Journal Article
Pang, L., Li, P., Bai, L., Liu, D., Zhou, Y., & Yao, J. (2018). Optimization of air distribution mode coupled interior design for civil aircraft cabin. Building and Environment, 134, 131-145. https://doi.org/10.1016/j.buildenv.2018.02.019

The airflow distribution and thermal comfort of human beings in civil aircraft cabin are influenced by many factors such as the ventilation mode, ventilation air volume, and supply air temperature and so on. Among these factors, the choice of ventila... Read More about Optimization of air distribution mode coupled interior design for civil aircraft cabin.

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.

En-situ EXAFS investigation of zeolite supported Pt electrocatalyst structure (2017)
Journal Article
Yao, J., & Yao, Y. (2017). En-situ EXAFS investigation of zeolite supported Pt electrocatalyst structure. Materials Technology, 32(14), 862-869. https://doi.org/10.1080/10667857.2017.1348013

© 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.

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.

Zeolite supported palladium nanoparticle characterization for fuel cell application (2017)
Journal Article
Yao, J., & Yao, Y. (2017). Zeolite supported palladium nanoparticle characterization for fuel cell application. International Journal of Hydrogen Energy, 42(29), 18560-18567. https://doi.org/10.1016/j.ijhydene.2017.04.182

© 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.

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.

Modelling air and water two-phase annular flow in small horizontal pipe (2016)
Journal Article
Yao, J., Yao, Y., Arini, A., McIlwain, S., & Gordon, T. (2016). Modelling air and water two-phase annular flow in small horizontal pipe. International Journal of Modern Physics: Conference Series, 42, https://doi.org/10.1142/S2010194516601587

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
Yao, J., & Yao, Y. (2016). Investigation of zeolite supported platinum electrocatalyst for electrochemical oxidation of small organic species. International Journal of Hydrogen Energy, 41(33), 14747-14757. https://doi.org/10.1016/j.ijhydene.2016.06.121

© 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.

DES study of blade trailing edge cutback cooling performance with various lip thicknesses (2016)
Journal Article
Effendy, M., Yao, Y. F., Yao, J., & Marchant, D. R. (2016). DES study of blade trailing edge cutback cooling performance with various lip thicknesses. Applied Thermal Engineering, 99, 434-445. https://doi.org/10.1016/j.applthermaleng.2015.11.103

© 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.

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.

Proton modified Pt zeolite fuel cell electrocatalysts (2015)
Book Chapter
Yao, J., Yao, Y., & Mirzaii, H. (2015). Proton modified Pt zeolite fuel cell electrocatalysts. In A. Sayigh (Ed.), Renewable Energy in the Service of Mankind Vol I (173-182). Springer. https://doi.org/10.1007/978-3-319-17777-9_16

© 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.

Experimental study of characteristics of bimetallic Pt-Fe nano-particle fuel cell electrocatalyst (2015)
Journal Article
Yao, J., & Yao, Y. (2015). Experimental study of characteristics of bimetallic Pt-Fe nano-particle fuel cell electrocatalyst. Renewable Energy, 81, 182-196. https://doi.org/10.1016/j.renene.2015.03.031

© 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
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.

Numerical optimisation of thermal comfort improvement for indoor environment with occupants and furniture (2015)
Journal Article
Horikiri, K., Yao, Y., & Yao, J. (2015). Numerical optimisation of thermal comfort improvement for indoor environment with occupants and furniture. Energy and Buildings, 88, 303-315. https://doi.org/10.1016/j.enbuild.2014.12.015

© 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.

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.

Direct numerical simulation of a turbulent flow over an axisymmetric hill (2014)
Journal Article
Castagna, J., Yao, Y., & Yao, J. (2014). Direct numerical simulation of a turbulent flow over an axisymmetric hill. Computers and Fluids, 95, 116-126. https://doi.org/10.1016/j.compfluid.2014.02.014

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)
Conference Proceeding
Effendy, M., Yao, Y., Yao, J., & Marchant, D. R. (2014). Predicting film cooling performance of trailing–edge cutback turbine blades by detached–eddy simulation. https://doi.org/10.2514/6.2014-0279

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
Horikiri, K., Yao, Y., & Yao, J. (2014). Modelling conjugate flow and heat transfer in a ventilated room for indoor thermal comfort assessment. Building and Environment, 77, 135-147. https://doi.org/10.1016/j.buildenv.2014.03.027

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.

Effect of mesh topologies on wall heat transfer and pressure loss prediction of a blade coolant passage (2013)
Journal Article
Effendy, M., Yao, Y., & Yao, J. (2013). Effect of mesh topologies on wall heat transfer and pressure loss prediction of a blade coolant passage. Applied Mechanics and Materials, 315, 216-220. https://doi.org/10.4028/www.scientific.net/AMM.315.216

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)
Journal Article
Yao, Y., Effendy, M., & Yao, J. (2013). Evaluation of wall heat transfer in blade trailing-edge cooling passage. Applied Mechanics and Materials, 284-287, 738-742. https://doi.org/10.4028/www.scientific.net/AMM.284-287.738

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.

Numerical study of unsteady airflow phenomena in a ventilated room (2012)
Conference Proceeding
Horikiri, K., Yao, Y., & Yao, J. (2012). Numerical study of unsteady airflow phenomena in a ventilated room. https://doi.org/10.1615/ICHMT.2012.CHT-12.730

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 study of unsteady airflow phenomena in a ventilated room (2012)
Journal Article
Horikiri, K., Yao, Y., & Yao, J. (2012). Numerical study of unsteady airflow phenomena in a ventilated room. Computational Thermal Sciences, 4(4), 317-333. https://doi.org/10.1615/ComputThermalScien.2012005093

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 simulation of a turbulent flow over an axisymmetric hill (2012)
Conference Proceeding
Castagna, J., Yao, Y., & Yao, J. (2012). Numerical simulation of a turbulent flow over an axisymmetric hill. https://doi.org/10.2514/6.2012-98

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.

Effect of jet inclination angle and hole exit shape on vortical flow structures in low-reynolds number jet in cross-flow (2012)
Journal Article
Yao, Y., Maidi, M., & Yao, J. (2012). Effect of jet inclination angle and hole exit shape on vortical flow structures in low-reynolds number jet in cross-flow. Modelling and Simulation in Engineering, 2012, 1-7. https://doi.org/10.1155/2012/632040

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.

CFD prediction and experimental measurement of blade water coverage in a diesel turbocharger (2012)
Journal Article
Yao, J., & Yao, Y. (2012). CFD prediction and experimental measurement of blade water coverage in a diesel turbocharger. Modelling and Simulation in Engineering, 2012, 1-11. https://doi.org/10.1155/2012/789563

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.

Computational study of hole shape effect on film cooling performance (2011)
Journal Article
Yao, J., & Yao, Y. (2011). Computational study of hole shape effect on film cooling performance. Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 225(4), 505-519. https://doi.org/10.1177/0957650911399013

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.

Numerical simulation of convective airflow in an empty room (2011)
Journal Article
Horikiri, K., Yao, Y., & Yao, J. (2011). Numerical simulation of convective airflow in an empty room. International Journal of Energy and Environment, 5(1), 574-581

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.

Numerical study of hole shape effect on blade cooling effectiveness (2010)
Journal Article
Yao, J., Sian, S., Yao, Y., & Davis, T. W. (2010). Numerical study of hole shape effect on blade cooling effectiveness. Modern Physics Letters B, 24(13), 1295-1298. https://doi.org/10.1142/S0217984910023463

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.

The effect of hole shape on blade cooling effectiveness (2010)
Journal Article
Yao, Y., & Yao, J. (2010). The effect of hole shape on blade cooling effectiveness. International Journal of Engineering Systems Modelling and Simulation, 2(4), 242-248. https://doi.org/10.1504/IJESMS.2010.038144

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
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.

Numerical simulation of heat transfer in rectangular microchannel (2009)
Journal Article
Yao, J., Yao, Y., Mason, P. J., & Patel, M. K. (2009). Numerical simulation of heat transfer in rectangular microchannel. Advances in applied mathematics and mechanics, 1(2), 231-241

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)
Journal Article
Yao, J., Yao, Y., Mason, P., Zhang, T., Heyes, F. J. G., & Roach, P. E. (2009). CFD modelling of water injection for turbine blade cleaning. Modern Physics Letters B, 23(3), 341-344. https://doi.org/10.1142/S0217984909018357

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.

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

Computational study of flow over generic fan-wing airfoil (2007)
Journal Article
Duddempudi, D., Yao, Y., Edmondson, D., Yao, J., & Curley, A. (2007). Computational study of flow over generic fan-wing airfoil. Aircraft Engineering and Aerospace Technology, 79(3), 238-244. https://doi.org/10.1108/00022660710743831

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.

Potential dependence of segregation and surface alloy formation of a Ru modified carbon supported Pt catalyst (2007)
Journal Article
Rose, A., Crabb, E. M., Qian, Y., Ravikumar, M., Wells, P. P., Wiltshire, R. J., …Russell, A. E. (2007). Potential dependence of segregation and surface alloy formation of a Ru modified carbon supported Pt catalyst. Electrochimica Acta, 52(18), 5556-5564. https://doi.org/10.1016/j.electacta.2007.02.023

Ruthenium modified carbon supported platinum catalysts have been shown to have a similar activity towards carbon monoxide oxidation as conventionally prepared bimetallic PtRu alloy catalysts. In this study the effect of the applied electrode potentia... Read More about Potential dependence of segregation and surface alloy formation of a Ru modified carbon supported Pt catalyst.

On reynolds number and scaling effects in microchannel flows (2007)
Journal Article
Mason, P. J., Yao, J., Yao, Y., & Patel, M. K. (2007). On reynolds number and scaling effects in microchannel flows. European Physical Journal: Applied Physics, 37(2), 229-235. https://doi.org/10.1051/epjap%3A2007010

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.

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)
Journal Article
Yao, Y., Petty, D., Barrington, P., Yao, J., & Mason, P. (2006). Direct numerical simulation of jets in cross-flow. International Journal of Computational Fluid Dynamics, 20(5), 279-285. https://doi.org/10.1080/10618560600909945

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
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

Self propagating high temperature synthesis of magnesium zinc ferrites (MgxZn1-xFe2O3): Thermal imaging and time resolved X-ray diffraction experiments (2004)
Journal Article
Spiers, H., Parkin, I. P., Pankhurst, Q. A., Affleck, L., Green, M., Caruana, D. J., …Kvick, A. (2004). Self propagating high temperature synthesis of magnesium zinc ferrites (MgxZn1-xFe2O3): Thermal imaging and time resolved X-ray diffraction experiments. Journal of Materials Chemistry, 14(7), 1104-1111. https://doi.org/10.1039/b314159b

Spinel ferrites of the form Mg Zn Fe O (x = 0. 0.25, 0.50, 0.75, 1.00) were prepared by self-propagating high-temperature synthesis (SHS) from reactions of iron(III), zinc and magnesium oxides, iron powder and sodium perchlorate. The driving force... Read More about Self propagating high temperature synthesis of magnesium zinc ferrites (MgxZn1-xFe2O3): Thermal imaging and time resolved X-ray diffraction experiments.

Hydride phase formation in carbon supported palladium nanoparticle electrodes investigated using in situ EXAFS and XRD (2003)
Journal Article
Rose, A., Maniguet, S., Mathew, R. J., Slater, C., Yao, J., & Russell, A. E. (2003). Hydride phase formation in carbon supported palladium nanoparticle electrodes investigated using in situ EXAFS and XRD. Physical Chemistry Chemical Physics, 5(15), 3220-3225. https://doi.org/10.1039/b302956e

In situ EXAFS (extended X-ray absorption fine structure), in situ XRD (X-ray diffraction) and electrochemical studies have been used to investigate the palladium hydride phases of carbon supported palladium nanoparticles as a function of applied pote... Read More about Hydride phase formation in carbon supported palladium nanoparticle electrodes investigated using in situ EXAFS and XRD.

Gas phase electrochemical detection of single latex particles (2003)
Journal Article
Caruana, D. J., & Yao, J. (2003). Gas phase electrochemical detection of single latex particles. Analyst, 128(10), 1286-1290. https://doi.org/10.1039/b305609k

In this study we describe zero current potentiometric measurements in a gaseous flame electrolyte, for the detection of single latex particles. Combustion of polystyrene latex particles when added to a premixed hydrogen/oxygen/nitrogen flame, results... Read More about Gas phase electrochemical detection of single latex particles.

Controlled modification of carbon supported platinum electrocatalysts by Mo (2002)
Journal Article
Crabb, E. M., Ravikumar, M. K., Qian, Y., Russell, A. E., Maniguet, S., Yao, J., …Ball, S. C. (2002). Controlled modification of carbon supported platinum electrocatalysts by Mo. Electrochemical and Solid-State Letters, 5(1), https://doi.org/10.1149/1.1419703

A carbon-supported platinum electrocatalyst was modified with molybdenum using surface organometallic chemistry. The catalyst was characterized using transmission electron microscopy, cyclic voltammetry (CV), polarization studies, and in situ fluores... Read More about Controlled modification of carbon supported platinum electrocatalysts by Mo.

In situ X-ray absorption spectroscopy and X-ray diffraction of fuel cell electrocatalysts (2001)
Journal Article
Russell, A. E., Maniguet, S., Mathew, R. J., Yao, J., Roberts, M. A., & Thompsett, D. (2001). In situ X-ray absorption spectroscopy and X-ray diffraction of fuel cell electrocatalysts. Journal of Power Sources, 96(1), 226-232. https://doi.org/10.1016/S0378-7753%2801%2900573-0

The utility of in situ X-ray absorption spectroscopy (XAS) in determining structural parameters, through analysis of the extended X-ray absorption fine structure (EXAFS), and electronic perturbations, through a white line analysis of the X-ray absorp... Read More about In situ X-ray absorption spectroscopy and X-ray diffraction of fuel cell electrocatalysts.