Unsteady numerical simulation of variable geometry axisymmetric inlet based on overset grid

被引：0
|
作者：
Luo J. [1 ]
Li Z. [1 ]
Chen K. [1 ]
Xiang H. [1 ]
机构：
[1] AVIC Chengdu Aircraft Design and Research Institute, Chengdu
来源：
Hangkong Xuebao/Acta Aeronautica et Astronautica Sinica | 2022年 / 43卷 / 12期
关键词：
axisymmetric inlet; dynamic regulation; overset grid; unsteady; variable geometry;
D O I：
10.7527/S1000-6893.2022.27028
中图分类号：
学科分类号：
摘要：
The axisymmetric inlet can improve the performance of the whole operating range through the scheme of translating the whole spike. The unsteady flow field of the dynamic regulation process of axisymmetric inlet was simulated by the overset grid approach in this study. The changing rule of start performance and the total pressure recovery coefficient in the dynamic regulation process of the inlet was studied through simulation. The results show that the inlet terminal shock wave moves forward with the increase of the anti-back pressure under the steady condition. With the back pressure exceeding a critical level, the inlet remains unstarted. In the unsteady regulation simulation, the inlet works in the starting mode with slightly lower performance. © 2022 AAAS Press of Chinese Society of Aeronautics and Astronautics. All rights reserved.
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