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Mode decomposition of disturbances in a supersonic flow
Thermophysics and Aeromechanics ( IF 0.5 ) Pub Date : 2021-02-20 , DOI: 10.1134/s0869864320050029
I. S. Tsyryulnikov , Yu. V. Gromyko , T. V. Poplavskaya

Controlled disturbances are inserted into the wind tunnel flow, and probing measurements of the fields of the amplitudes of pressure and phase velocity oscillations of these disturbances are performed. Based on the relations for inviscid interaction of long-wave vortex, entropy, and acoustic disturbances with the shock wave on a wedge and numerical simulations, the coefficients of conversion of various modes to pressure oscillations on the model surface are determined for the test conditions of a supersonic flow in the T-327B blowdown wind tunnel located at the Khristianovich Institute of Theoretical and Applied Mechanics of the Siberian Branch of the Russian Academy of Sciences. The method of mode decomposition for controlled disturbances with the use of disturbance conversion coefficients is implemented in the case of a flat plate model with a sharp leading edge aligned at different angles of attack and side-slip in the flow.



中文翻译:

超声波流中扰动的模式分解

将受控的扰动插入风洞流中,并对这些扰动的压力幅度和相速度振荡的场进行探测测量。基于楔形波上长波涡旋,熵和声扰动与冲击波的无形相互作用的关系和数值模拟,确定了在测试条件下各种模式到模型表面压力振荡的转换系数。俄罗斯科学院西伯利亚分院Khristianovich理论和应用力学研究所T-327B排污风洞中的超音速流动。

更新日期:2021-02-21
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