Three-dimensional reconstruction of incident shock/boundary layer interaction using background-oriented schlieren

被引：11
|
作者：
Wang, Chengpeng [1 ]
Xu, Pei [1 ]
Xue, Longsheng [1 ]
Jiao, Yun [1 ]
机构：
[1] Nanjing Univ Aeronaut & Astronaut, Coll Aerosp Engn, Nanjing 210016, Jiangsu, Peoples R China
来源：
ACTA ASTRONAUTICA | 2019年 / 157卷
基金：
中国国家自然科学基金;
关键词：
Background-oriented schlieren; 3D reconstruction; Quantitative measurement; Visualization of flow fields; SHOCK TRAIN;
D O I：
10.1016/j.actaastro.2019.01.002
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
To study the three-dimensional flow structure of an incident shock/boundary layer interaction, a M2.7 nozzle model with a ramp was tested based on the background-oriented schlieren (BOS) technique. After comparing the results of CFD, shear-sensitive liquid crystal (SSLC), and high-speed schlieren, we conclude that BOS can capture the internal structure of the flow field and that its results are consistent with those of other methods in which the relative error can be controlled to 7%. In this research, a new type of experiment with several light paths was used with BOS technology. Three-dimensional reconstruction of incident oblique shock (primarily the width of Mach stem of the shock wave) and quantitative results of the flow field can be obtained successfully, and BOS shows great potential for the measurement of flow fields.
引用
收藏
页码：341 / 349
页数：9
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