The onset of Darcy-Brinkman thermosolutal convection in a horizontal porous media

被引：39
|
作者：
Wang, Shaowei
Tan, Wenchang [1 ]
机构：
[1] Peking Univ, LTCS, Coll Engn, Beijing 100871, Peoples R China
来源：
PHYSICS LETTERS A | 2009年 / 373卷 / 07期
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
Onset; Thermalsolutal; Porous medium; Darcy-Brinkman model; DOUBLE-DIFFUSIVE CONVECTION; SORET; FLUID; LAYER; STABILITY; FLOW;
D O I：
10.1016/j.physleta.2008.12.056
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
On the basis of Brinkman model, the onset of double-diffusive (thermosolutal) convection with a reaction term in a horizontal sparsely packed porous media is studied using the normal mode analysis. The effects of Brinkman term, the reaction term, the normalized porosity epsilon and Lewis number Le on the Rayleigh number for stationary and oscillatory case are presented graphically. The Darcy number destabilize the system in case of both stationary and oscillatory mode. The effects of Lewis number and reaction term depend oil the value of the values of solutal Rayleigh number. Furthermore, some results of Darcy model can be recovered in limit cases. (C) 2009 Elsevier B.V. All rights reserved.
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页码：776 / 780
页数：5
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