Convection in a Porous Medium with Variable Gravity Field and Magnetic Field Effects

被引：0
|
作者：
A. J. Harfash
机构：
[1] University of Basrah,Department of Mathematics, College of Sciences
来源：
Transport in Porous Media | 2014年 / 103卷
关键词：
Magnetic field; Linear instability; Gravity field; Non-linear global stability; Subcritical instability; Finite difference;
D O I：
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中图分类号：
学科分类号：
摘要：
The problem of convection in a variable gravity field with magnetic field effect is studied using methods of linear instability theory and non-linear energy theory. Then, the accuracies of both the linear instability and global non-linear energy stability thresholds are tested using a three-dimensional simulation. The strong stabilizing effect of gravity field and magnetic field is shown. Moreover, the results support the assertion that the linear theory is very accurate in predicting the onset of convective motion, and thus regions of stability.
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页码：361 / 379
页数：18
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