外部涡流和热波产生的流向结构

IF 0.5 4区工程技术 Q4 MECHANICS

Journal of Applied Mechanics and Technical Physics Pub Date : 2024-02-13 DOI:10.1134/S0021894423060123

S. A. Gaponov

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引用次数: 0

摘要

摘要研究了亚音速和超音速边界层中外部涡流和热波产生的流向结构。研究特别关注边界层外缘边界条件的制定。研究发现，边界层流向速度的扰动可能比外部涡旋波的振幅大几倍。生成效率随着马赫数的增加而降低。研究表明，热外力波对边界层流动结构的影响远远弱于流动涡旋结构的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

GENERATION OF STREAMWISE STRUCTURES BY EXTERNAL VORTICAL AND THERMAL WAVES

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GENERATION OF STREAMWISE STRUCTURES BY EXTERNAL VORTICAL AND THERMAL WAVES

Streamwise structures generated by external vortical and thermal waves in subsonic and supersonic boundary layers have been studied. Particular attention is paid to the formulation of the boundary conditions at the outer edge of the boundary layer. It has been found that the disturbances of the boundary-layer streamwise velocities can be several times larger than the amplitude of the external vortical wave. The generation efficiency decreases with increasing Mach number. It has been shown that the influence of thermal external waves on the boundary-layer flow structure is much weaker than the influence of the vortex structure of the flow.

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来源期刊

Journal of Applied Mechanics and Technical Physics 物理-力学

CiteScore

1.20

自引率

16.70%

发文量

审稿时长

4-8 weeks

期刊介绍： Journal of Applied Mechanics and Technical Physics is a journal published in collaboration with the Siberian Branch of the Russian Academy of Sciences. The Journal presents papers on fluid mechanics and applied physics. Each issue contains valuable contributions on hypersonic flows; boundary layer theory; turbulence and hydrodynamic stability; free boundary flows; plasma physics; shock waves; explosives and detonation processes; combustion theory; multiphase flows; heat and mass transfer; composite materials and thermal properties of new materials, plasticity, creep, and failure.