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首页> 外文期刊>Journal of porous media >Natural Convection in a Cavity Filled with a Porous Medium with Variable Porosity and Darcy Number
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Natural Convection in a Cavity Filled with a Porous Medium with Variable Porosity and Darcy Number

机译：孔隙度和达西数可变的多孔介质填充的空腔中的自然对流

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This work presents a numerical analysis of the natural convection in a squared cavity with isothermal vertical walls. The cavity is filled with a saturated porous medium, and the classical equations for natural convection, mass, momentum, and energy balance, together with Brinkman's and Forchheimeir's models, are used to study the phenomenon. The system of equations is numerically solved through the finite volume method. For porous media with constant porosity, the results are compared to those found in the literature, with very good agreement. The influence of the variation of Darcy number in media with variable porosity is investigated. The results indicate that the inclusion of the variation of Darcy number affects significantly the velocity and temperature fields as well as the values of heat transfer rates.
机译：这项工作提出了具有等温垂直壁的方腔中自然对流的数值分析。空腔中充满了饱和的多孔介质，并且使用自然对流，质量，动量和能量平衡的经典方程式，以及Brinkman模型和Forchheimeir模型，来研究这种现象。方程组通过有限体积法进行数值求解。对于具有恒定孔隙率的多孔介质，将结果与文献中的结果进行比较，具有很好的一致性。研究了孔隙度可变的介质中达西数变化的影响。结果表明，包含达西数的变化会显着影响速度和温度场以及传热速率的值。

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