热调制倾斜流体层的能量稳定性

IF 1.3 4区工程技术 Q3 MECHANICS

Fluid Dynamics Research Pub Date : 2022-07-14 DOI:10.1088/1873-7005/ac8118

M. Arora, Renu Bajaj

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引用次数: 0

摘要

利用线性不稳定性分析和广义能量稳定性理论，分析了热调制倾斜流体层中自然对流的稳定性。得到了流体层全局稳定性的一个充分条件。稳定性边界是根据瑞利数找到的。采用射击法对其稳定性极限进行了数值求解。在线性和非线性稳定边界之间观察到不确定稳定区域。不稳定性的开始取决于调制的频率和幅度。

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Energy stability of thermally modulated inclined fluid layer

The stability of natural convection in thermally modulated inclined fluid layer is analyzed using linear instability analysis and generalized energy stability theory. A sufficient condition for the global stability of the fluid layer is obtained. The stability boundaries are found in terms of the Rayleigh number. Shooting method is used to find the stability limits numerically. Uncertain stability region is observed between the linear and the nonlinear stability boundaries. The onset of instability depends upon the frequency and the amplitude of modulation.

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来源期刊

Fluid Dynamics Research 物理-力学

CiteScore

2.90

自引率

6.70%

发文量

审稿时长

5 months

期刊介绍： Fluid Dynamics Research publishes original and creative works in all fields of fluid dynamics. The scope includes theoretical, numerical and experimental studies that contribute to the fundamental understanding and/or application of fluid phenomena.