Abstract Numerical investigation of natural convection from heat-conductive source enveloped by a porous layer in a cavity is presented. The right and left walls of the cavity are maintained at the same cold temperature, whereas the top and bottom walls are thermally insulated. A developed program (based on the finite-volume method and the semi-implicit method for pressure-linked equations algorithm) was utilized to numerically solve the governing Navier–Stokes equations with the associated boundary conditions. Results are presented to show the effect of parameters such as porous to fluid thermal conductivity ratio, the Rayleigh number, the Darcy number, the porous layer thickness and the tilting angle of the cavity on the cooling of heat source. It was found that the maximum heat source temperature decreases with increasing porous to fluid thermal conductivity ratio, permeability and porous layer thickness.

中文翻译：

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来自被多孔层包围的热源的自然对流

摘要 对空腔内多孔层包裹的导热源的自然对流进行了数值研究。腔体的左右壁保持相同的低温，而顶壁和底壁是隔热的。开发的程序（基于有限体积方法和压力关联方程算法的半隐式方法）被用来数值求解具有相关边界条件的控制 Navier-Stokes 方程。结果显示了诸如多孔流体热导率比、瑞利数、达西数、多孔层厚度和腔体倾斜角等参数对热源冷却的影响。