Numerical Simulation on the Cavity-Induced Boundary Layer Transition

被引：1
|
作者：
Guo, Peixu [1 ]
Gao, Zhenxun [1 ]
Jiang, Chongwen [1 ]
Lee, Chun-hian [1 ]
机构：
[1] Beihang Univ, Sch Aeronaut Sci & Engn, Beijing, Peoples R China
来源：
10TH ASIAN-PACIFIC CONFERENCE ON AEROSPACE TECHNOLOGY AND SCIENCE & THE 4TH ASIAN JOINT SYMPOSIUM ON AEROSPACE ENGINEERING (APCATS'2019 /AJSAE'2019) | 2020年 / 1509卷
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1088/1742-6596/1509/1/012020
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
The boundary layer transition can be triggered in either natural or forced way. In this paper, a Mach 3 cavity-induced boundary layer transition is simulated using the implicit large eddy simulation, in order to study the transition caused by the surface gap on the vehicles in the real condition. One of the characteristics of this paper is that no disturbance is imposed in the inflow condition such that the boundary layer transition is triggered by the self-sustained fluctuation in the upstream cavity. Results show that the transition appears in the natural scenario and the stage of the linear instability seems to be followed by the process of the secondary instability. Linear stability analyses are also utilized to show the development of the unstable modes.
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页数：7
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