多孔介质中具有霍尔电流、辐射效应和变温的斜抛物面加速板非定常MHD自由对流

G. Nalisi, J. A. Okello, J. Sigey, M. Kimathi
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引用次数: 2

摘要

本文通过对倾斜抛物面加速板施加角度为α的横向磁场,分析了霍尔电流和辐射对多孔介质中粘性不可压缩导电流体通过倾斜抛物面加速板的非定常水磁自由对流流动的影响。假定流体是粘性的、不可压缩的、具有强磁场的导电流体。利用修正的欧姆定律和Bossinesq近似,通过适当的变换将问题的控制方程化为局部非相似边界层方程。采用Crank-Nicolson有限差分法对不同控制参数值的流场无量纲控制方程进行数值求解。速度和温度曲线用图形表示。
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Unsteady MHD Free Convective Flow Past an Inclined Parabolic Accelerated Plate with Hall Current, Radiation Effects and Variable Temperature in a Porous Medium
We analyze the effects of hall current and radiation on unsteady hydro magnetic free convection flow of a viscous incompressible electrically conducting fluid past an inclined parabolic accelerated plate in a porous medium by applying a transverse magnetic field which makes an angle α to the inclined plate. The fluid is assumed to be viscous, incompressible and electrically conducting with a strong magnetic field. Using the modified Ohm’s law and the Bossinesq approximation the governing equations of the problem are reduced to local non-similarity boundary layer equations using suitable transformation. The dimensionless governing equations of flow field are solved numerically by Crank-Nicolson finite difference method for different values of governing flow parameters. The velocity and temperature profiles are shown through graphs.
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