Rotating Brinkman-Lapwood Convection with Modulation

被引：20
|
作者：
Om [1 ]
Bhadauria, B. S. [2 ]
Khan, A. [1 ]
机构：
[1] Jai Narain Vyas Univ, Fac Sci, Dept Math & Stat, Jodhpur 342005, Rajasthan, India
[2] Banaras Hindu Univ, Fac Sci, Dept Math, DST Ctr Interdisciplinary Math Sci, Varanasi 221005, Uttar Pradesh, India
来源：
TRANSPORT IN POROUS MEDIA | 2011年 / 88卷 / 03期
关键词：
Rotation speed modulation; Brinkman Model; Lapwood convection; Coriolis force; Taylor number; Vadasz number; Viscosity ratio; RAYLEIGH-BENARD CONVECTION; POROUS LAYER; STABILITY; FLUID;
D O I：
10.1007/s11242-011-9744-7
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The purpose of this article is to analyze, theoretically, the effect of modulation on rotating Brinkman-Lapwood convection, i.e., buoyancy-driven convection in a sparse porous medium subjected to rotation. Darcy-Brinkman momentum equation with Coriolis term has been used to describe the flow. The system is considered rotating about an axis with non-uniform rotation speed. In particular, we assume that the rotation speed is varying sinusoidally with time. A linear stability analysis has been performed to find the critical Rayleigh number in modulated case. The effect of modulated rotation speed is found to have a stabilizing effect on the onset of convection for different values of modulation frequency and the other physical parameters involved.
引用
收藏
页码：369 / 383
页数：15
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