Experimental study of the influence of supersonic boundary-layer suction on its stability to controlled disturbances

IF 0.5 4区工程技术 Q4 ENGINEERING, AEROSPACE

Thermophysics and Aeromechanics Pub Date : 2024-12-13 DOI:10.1134/S0869864324030041

V. I. Lysenko, B. V. Smorodsky, Yu. G. Yermolaev, S. N. Tagaev, A. D. Kosinov

引用次数: 0

Abstract

A pioneering experimental study of the influence of distributed suction of a supersonic boundary layer on a flat plate on its stability to controlled (artificial) disturbances at the freestream Mach number M_∞ = 2 is performed. Experimental results are compared to numerical predictions, and good quantitative agreement is observed. The conclusions of the linear stability theory that suction of the type considered in the study stabilizes the flow in a supersonic boundary layer are experimentally validated; moreover, the stabilizing effect of suction is more pronounced than the destabilizing effect of surface porosity.

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超音速边界层吸力对受控扰动稳定性影响的实验研究

在自由流马赫数 M∞ = 2 时，对平板上超音速边界层的分布式吸力对其受控（人工）扰动稳定性的影响进行了开创性的实验研究。实验结果与数值预测结果进行了比较，发现两者在数量上有很好的一致性。实验验证了线性稳定性理论的结论，即研究中考虑的吸力类型可稳定超音速边界层中的流动；此外，吸力的稳定效应比表面孔隙率的失稳效应更为明显。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Thermophysics and Aeromechanics THERMODYNAMICS-MECHANICS

CiteScore

0.90

自引率

40.00%

发文量

审稿时长

>12 weeks

期刊介绍： The journal Thermophysics and Aeromechanics publishes original reports, reviews, and discussions on the following topics: hydrogasdynamics, heat and mass transfer, turbulence, means and methods of aero- and thermophysical experiment, physics of low-temperature plasma, and physical and technical problems of energetics. These topics are the prior fields of investigation at the Institute of Thermophysics and the Institute of Theoretical and Applied Mechanics of the Siberian Branch of the Russian Academy of Sciences (SB RAS), which are the founders of the journal along with SB RAS. This publication promotes an exchange of information between the researchers of Russia and the international scientific community.