两层分层流中的内波

IF 0.5 4区工程技术 Q4 MECHANICS

Journal of Applied Mechanics and Technical Physics Pub Date : 2023-03-03 DOI:10.1134/S0021894422060153

N. I. Makarenko, J. L. Maltseva, A. A. Cherevko

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引用次数: 0

摘要

本文研究了密度与层内深度成指数关系并在界面处有跳变的两层层状流体中的内波问题。导出了描述孤立波的二阶长波近似方程。研究了水平分段恒流的小扰动方程的谱性质，探讨了分层流剪切失稳的可能机理。

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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INTERNAL WAVES IN TWO-LAYER STRATIFIED FLOWS

This paper deals with a problem of internal waves in a two-layer stratified fluid with a density that depends exponentially on the depth inside the layers and has a jump at the interface. The equation of second-order long-wave approximation, which describes solitary waves, is derived. The spectral properties of the equations of small perturbations of a horizontal piecewise constant flow are studied, and possible mechanisms for the shear instability of a stratified flow are characterized.

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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.