首页|Large-eddy simulation of shock-wave/turbulent boundary layer interaction with and without SparkJet control

Large-eddy simulation of shock-wave/turbulent boundary layer interaction with and without SparkJet control

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The efficiency and mechanism of an active control device‘‘SparkJet”and its application in shock-induced separation control are studied using large-eddy simulation in this paper. The base flow is the interaction of an oblique shock-wave generated by 8? wedge and a spatially-developing Ma=2.3 turbulent boundary layer. The Reynolds number based on the incoming flow property and the boundary layer displacement thickness at the impinging point without shock-wave is 20000. The detailed numerical approaches were presented. The inflow turbulence was generated using the digital filter method to avoid artificial temporal or streamwise periodicity. The numerical results including velocity profile, Reynolds stress profile, skin friction, and wall pressure were sys-tematically validated against the available wind tunnel particle image velocimetry (PIV) measure-ments of the same flow condition. Further study on the control of flow separation due to the strong shock-viscous interaction using an active control actuator ‘‘SparkJet” was conducted. The single-pulsed characteristic of the device was obtained and compared with the experiment. Both instantaneous and time-averaged flow fields have shown that the jet flow issuing from the actuator cavity enhances the flow mixing inside the boundary layer, making the boundary layer more resis-tant to flow separation. Skin friction coefficient distribution shows that the separation bubble length is reduced by about 35%with control exerted.

Large-eddy simulationShock-waveTurbulent boundary layerInteractionSparkJet control

Yang Guang、Yao Yufeng、Fang Jian、Gan Tian、Li Qiushi、Lu Lipeng

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National Key Laboratory of Science and Technology on Aero-Engine Aero-Thermodynamics, School of Energy and Power Engineering, Beihang University, Beijing 100083, China

Faculty of Environment and Technology, University of the West of England, Bristol BS16 1QY, United Kingdom

This work was supported by the National Natural Science Foundation of ChinaThis work was supported by the National Natural Science Foundation of ChinaThis work was supported by the National Natural Science Foundation of ChinaThis work was supported by the National Natural Science Foundation of ChinaThis work was supported by the National Natural Science Foundation of ChinaNational Basic Research Program of Chinacompu-tational time for the present study was provided by the UK Turbulence Consortiumsimulations were run on the UK High Performance Com-puting Service ARCHER. We also would like to acknowledge the University of t

11302012514201050085147600411572025511360032012CB720205EPSRC grant EP/L000261/1

2016

中国航空学报(英文版)
中国航空学会

中国航空学报(英文版)

CSTPCDCSCDSCIEI
影响因子：0.847
ISSN：1000-9361
年,卷(期)：2016.29(3)
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