锯齿形转捩片触发高超声速进气道边界层转捩的大涡模拟

张红军; 朱志斌; 尚庆; 刘智勇; 沈清

doi:10.7527/S1000-6893.2019.22930

航空学报 >

2019 , Vol. 40 >Issue 10: 122930 - 122930

DOI: https://doi.org/10.7527/S1000-6893.2019.22930

流体力学与飞行力学

锯齿形转捩片触发高超声速进气道边界层转捩的大涡模拟

张红军 ,
朱志斌 ,
尚庆 ,
刘智勇 ,
沈清

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中国航天空气动力技术研究院, 北京 100074

收稿日期: 2019-01-22

修回日期: 2019-02-14

网络出版日期: 2019-06-06

基金资助

国家自然科学基金（11772316）

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Large eddy simulation of hypersonic inlet boundary layer transition triggered by zig-zag trip

ZHANG Hongjun ,
ZHU Zhibin ,
SHANG Qing ,
LIU Zhiyong ,
SHEN Qing

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China Academy of Aerospace Aerodynamics, Beijing 100074, China

Received date: 2019-01-22

Revised date: 2019-02-14

Online published: 2019-06-06

Supported by

National Natural Science Foundation of China (11772316)

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摘要

为促进锯齿形转捩片在高超声速进气道中的应用，以地面风洞条件下的二元进气道为研究对象，采用高精度大涡模拟方法对锯齿形转捩片在三级压缩楔面上触发的边界层转捩现象开展了研究。数值方法基于隐式亚格子模型，空间离散采用高精度通量限制型紧致格式，时间推进采用显式Runge-Kutta方法。数值模拟清晰捕捉到了边界层转捩的空间发展演化过程，并获得了统计平均流场以及流场脉动特征。数值模拟结果表明转捩片能够有效触发进气道压缩面边界层转捩；通过与等熵压缩面及单楔面数值模拟结果的对比分析，获得了转捩片触发边界层转捩的内在机理，为后续研究工作奠定了基础。

关键词： 高超声速; 进气道; 锯齿形转捩片; 大涡模拟; 转捩机理

本文引用格式

张红军 , 朱志斌 , 尚庆 , 刘智勇 , 沈清 . 锯齿形转捩片触发高超声速进气道边界层转捩的大涡模拟[J]. 航空学报, 2019 , 40(10) : 122930 -122930 . DOI: 10.7527/S1000-6893.2019.22930

Abstract

To promote the application of zig-zag trip in hypersonic inlet, a high-precision large eddy simulation method is used to examine the boundary layer transition triggered by zig-zag trip on three-stage compression wedge of two-dimensional inlet in wind tunnel. The numerical method is based on the implicit subgrid-scale model. The high-precision flux-limited compact scheme is used for spatial discretization and the explicit Runge-Kutta method for time marching. The numerical simulation clearly captures the spatial evolution process of boundary layer transition, and obtains the statistical mean flow field and fluctuation characteristics. The numerical simulation results show that the zig-zag trip can effectively trigger the boundary layer transition. By comparing the numerical simulation results with those of isentropic compression surface and single wedge surface, the mechanism of boundary layer transition is obtained and lays a foundation for further study.

Key words： hypersonic; inlet; zig-zag trip; large eddy simulation; transition mechanism

参考文献

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