MHD Natural Convection in Porous Media-Filled Enclosures
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摘要: 在一个多孔介质中含倾斜矩形夹杂物时，数值地研究磁流体动力学自然对流热交换问题．矩形夹杂的边界条件为两个绝热壁和两个等温壁．使用适当的变量集，将控制方程：连续性条件、推广的Darcy定理——Forchheimer律、能量方程变换为无量纲形式，然后使用有限差分格式求解．磁效应数、Darcy-Rayleigh数、矩形夹杂物的倾斜角以及纵横比作为控制参数．得到多孔介质中含矩形夹杂物时，磁效应数和倾斜角参数影响流体流动和热交换的规律．Abstract: The magneto hydrodynamics natural convection heat transfer problem inside a porous media filled inclined rectangular enclosures is investigated numerically.The boundary conditions selected on the enclosure were two adiabatic and two isothermal walls.The governing equations,continuity,Forchheimer extension of Darcy law and energy,were going to be transformed into dimensionless form using a set of suitable variables then solved using a finite difference scheme.The governing parameters are magnetic influence number,Darcy-Rayleigh number,inclination angle,and the aspect ratio of the enclosure.It is found that the magnetic influence number and the inclination angle parameter have pronounced effects on the fluid flow and heat transfer in porous media filled enclosures.
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