Study of start/unstart phenomenon of supersonic inlet in acceleration/deceleration process

被引：0
作者：
Zhao, Hao [1 ,2 ,3 ]
Xie, Lü-Rong [1 ,3 ]
Guo, Rong-Wei [1 ]
Tneg, Yu-Lin [1 ,3 ]
Zhang, Jun [2 ]
机构：
[1] Jiangsu Province Key Laboratory of Aerospace Power System, College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing
[2] China Aviation Powerplant Research Institute, Aviation Industry Corporation of China, Zhuzhou, 412002, Hunan
[3] Collaborative Innovation Center for Advanced Aero-Engine, Beijing
来源：
Hangkong Dongli Xuebao/Journal of Aerospace Power | 2015年 / 30卷 / 08期
关键词：
Acceleration/deceleration; Start; Supersonic inlet; Unstart; Unsteady;
D O I：
10.13224/j.cnki.jasp.2015.08.007
中图分类号：
学科分类号：
摘要：
In order to study start/unstart flow characteristic in the acceleration/deceleration process, an investigation of two-dimensional mixed-compression supersonic inlet was performed in steady/unsteady numerical simulation. The effect of absolute value of acceleration on inlet performance was analyzed at Mach number from 1.75 to 2.05 and four different absolute values of acceleration were considered. The results of steady and unsteady numerical simulations were compared. The results indicate: in both start and unstart processes, the flow characteristic of the unsteady case lags behind compared with the steady one's, and the larger absolute value of acceleration means more obvious phenomena. The performance in unsteady simulation obviously lags behind that in steady simulation. The start process of inlet spends more time than unstart process under the same absolute value of acceleration. ©, 2015, BUAA Press. All right reserved.
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页码：1841 / 1852
页数：11
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