Stationary and oscillatory convection of binary fluids in a porous medium

被引：5

作者：

Augustin, M. ^{[1
]}

Umla, R. ^{[1
]}

Huke, B. ^{[1
]}

Luecke, M. ^{[1
]}

机构：

[1] Univ Saarland, Inst Theoret Phys, D-66041 Saarbrucken, Germany

来源：

PHYSICAL REVIEW E | 2010年 / 82卷 / 05期

关键词：

TRAVELING-WAVE CONVECTION; CONFINED STATES; MIXTURES; VISUALIZATION; BISTABILITY; STABILITY; CURRENTS; ROLL; FLOW;

D O I：

10.1103/PhysRevE.82.056303

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

We investigate numerically stationary convection and traveling wave structures of binary fluid mixtures with negative separation ratio in the Rayleigh-Benard system filled with a porous medium. The bifurcation behavior of these roll structures is elucidated as well as the properties of the velocity, temperature, and concentration fields. Moreover, we discuss lateral averaged currents of temperature and concentration. Finally, we investigate the influence of the Lewis number, of the separation ratio, and of the normalized porosity on the bifurcation branches.

引用

页数：10

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