Yufeng Yao's Outputs (14)

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.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

DES 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.