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首页> 外文期刊>Heat Transfer >Radiative magneto‐thermogravitational flow in a porous square cavity with viscous heating and Hall current effects: A numerical study of ψ–v scheme
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Radiative magneto‐thermogravitational flow in a porous square cavity with viscous heating and Hall current effects: A numerical study of ψ–v scheme

机译：Radiative magneto‐thermogravitational flow in a porous square cavity with viscous heating and Hall current effects: A numerical study of ψ–v scheme

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摘要

A numerical study presented for the natural convection two‐dimensional incompressible flow of a magnetized fluid in a square enclosure filled with porous medium. Viscous dissipation, thermal radiation, and Hall current effects are included. The formulated computational domain comprising the mass, momentum, and energy conservation equations with appropriate boundary conditions, is rendered dimensionless via appropriate scaling transformations. The resulting nondimensional partial governing equations are solved by the ψ–v scheme. A detailed parametric investigation of the influence of Hartman number (magnetic body force parameter), Rayleigh number (thermal buoyancy parameter), Darcy number (permeability parameter), Eckart number for porous medium, Hall parameter, and radiation parameter on the streamline, temperature contours, local Nusselt number along the hot wall and mid‐section velocity profiles are computed. Thermal Rayleigh number can be a control key parameter on heat and flow in enclosures. In addition, the heat transfer rate is intensified with increasing thermal Rayleigh numbers. With increasing Darcy number (i.e., greater permeability of the porous medium and progressively lower Darcian drag force) there is a strong elevation in the average Nusselt number at the left hot wall.
机译：自然的数值研究对流两维不可压缩流磁化流体在一个方形外壳多孔介质。辐射,包括霍尔电流的影响。制定计算域组成质量、动量和能量守恒方程和相应的边界条件,通过适当的比例呈现无量纲吗转换。部分控制方程解决ψ- v计划。哈特曼(磁性体数量的影响力参数)、瑞利数(热浮力参数),达西数(渗透率籍参数),数量为多孔介质,大厅参数,和辐射的参数简化,温度轮廓,局部努塞尔特数量在热壁和中应承担的部分速度资料计算。数量可以控制热量和关键参数流在附件。传输速率与日益加剧热瑞利数。数量(即大的多孔的渗透性中,逐步降低Darcian阻力力)有很强的海拔平均水平努塞尔特数在左边热墙。

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