All Outputs (20)

Numerical investigation on shock train control and applications in a scramjet engine (2016)
Journal Article
Xing, F., Ruan, C., Huang, Y., Fang, X., & Yao, Y. (2017). Numerical investigation on shock train control and applications in a scramjet engine. Aerospace Science and Technology, 60, 162-171. https://doi.org/10.1016/j.ast.2016.11.007

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

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

Investigation of three-dimensional shock wave/turbulent-boundary-layer interaction initiated by a single fin (2016)
Journal Article
Fang, J., Yao, Y., Zheltovodov, A. A., & Lu, L. (2017). Investigation of three-dimensional shock wave/turbulent-boundary-layer interaction initiated by a single fin. AIAA Journal, 55(2), 509-523. https://doi.org/10.2514/1.J055283

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

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

Comparative study on pole placement controller design with U-Model approach & classical approach (2016)
Journal Article
Mokhtar, N., Qiu, J., Zhu, G., Zhu, Q., Nibouche, M., & Yao, Y. (2016). Comparative study on pole placement controller design with U-Model approach & classical approach. https://doi.org/10.1109/ChiCC.2016.7555009

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

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

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.

Large-eddy simulation of shock-wave/turbulent boundary-layer interactions and its control using Sparkjet (2016)
Journal Article
Yang, G., Yao, Y., Fang, J., Tian, G., & Lu, L. (2016). Large-eddy simulation of shock-wave/turbulent boundary-layer interactions and its control using Sparkjet. International Journal of Modern Physics: Conference Series, 42, https://doi.org/10.1142/S2010194516601861

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.

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.

Large-eddy simulation of shock-wave/turbulent boundary layer interaction with and without SparkJet control (2016)
Journal Article
Yang, G., Yao, Y., Fang, J., Gan, T., Li, Q., & Lu, L. (2016). Large-eddy simulation of shock-wave/turbulent boundary layer interaction with and without SparkJet control. Chinese Journal of Aeronautics, 29(3), 617-629. https://doi.org/10.1016/j.cja.2016.04.001

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

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

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.

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.

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.

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.

An improved local remeshing algorithm for moving boundary problems (2016)
Journal Article
Zheng, J., Chen, J., Zheng, Y., Yao, Y., Li, S., & Xiao, Z. (2016). An improved local remeshing algorithm for moving boundary problems. Engineering Applications of Computational Fluid Mechanics, 10(1), 403-426. https://doi.org/10.1080/19942060.2016.1174888

© 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.