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首页> 外文期刊>Инженерно-физический журнал >HYDROMAGNETIC NATURAL CONVECTION FROM A HORIZONTAL POROUS ANNULUS WITH HEAT GENERATION OR ABSORPTION
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HYDROMAGNETIC NATURAL CONVECTION FROM A HORIZONTAL POROUS ANNULUS WITH HEAT GENERATION OR ABSORPTION

机译：具有热发电或吸收的水平多孔环空的水磁自然对流

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摘要

This paper deals with a numerical study offree convection in a horizontal cylindrical annulus filled with a fluid-saturated porous medium in the presence of a transverse magnetic field and the heat generation or absorption effect. It is assumed that the inner and outer walls of the cylindrical annulus are maintained at constant temperatures T_i and T_o, respectively, as T_i>T_o. In addition to the heat equation, the model consists of the equation of motion under the Darcy law and Boussinesq approximation. The system of equations is solved numerically by the alternating-direction implicit finite difference method. This investigation concerns the effects of the magnetic field inclination angle, Hartmann number, and the heat generation or absorption coefficient on heat transfer and the flow pattern. The results demonstrate that the heat transfer rate and flow regime depend mainly on the characteristics mentioned. The obtained data are presented graphically in terms of the streamlines and isotherms.
机译：本文涉及在横向磁场的存在下填充有流体饱和多孔介质的水平圆柱环中的数值研究偏移对流。假设圆柱环的内壁和外壁分别在恒定温度和T_O处保持为T_I> T_O。除了热方程之外，该模型包括达西法和Boussinesq近似下的运动方程。通过交替方向隐式有限差分方法在线下列方式解决方程系统。该研究涉及磁场倾斜角，Hartmann号和发热或吸收系数对传热和流动模式的影响。结果表明，传热速率和流动制度主要取决于所提到的特性。所获得的数据以石流线和等温线以图形方式呈现。

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