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首页> 外文期刊>International Journal of Heat and Mass Transfer >Effects of thermal spot configurations on the flow through porous media driven by natural and forced convection
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Effects of thermal spot configurations on the flow through porous media driven by natural and forced convection

机译：热点配置对自然对流和强制对流驱动的多孔介质流动的影响

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摘要

A study concerning the flow of a Newtonian fluid through a porous medium for the particular case natural convection is produced by hot and cold spots placed in the solid phase is presented. Results involving the interaction of forced convection with thermal spots are reported to visualize the mechanisms associated with the generation of complex flow patterns in the porous medium. For this purpose the computation of a two-field model is carried out. Two systems are studied: one is a rectangular porous cavity (RPC) of square cross section and the other is an annular porous cavity (APC) comprised by two concentric vertical cylindrical walls. It is shown, in general, that the flow patterns associated with each configuration and intensities of the thermal spots may be qualitatively inferred by following rules that are established through a basic study of mixed convection in the RPC.
机译：提出了一种关于牛顿流体通过多孔介质流动的研究，在特殊情况下自然对流是由固相中的热点和冷点产生的。据报道，涉及强制对流与热点的相互作用的结果可视化了与多孔介质中复杂流型的产生相关的机理。为此，进行两场模型的计算。研究了两种系统：一种是方形横截面的矩形多孔腔（RPC），另一种是由两个同心垂直圆柱壁组成的环形多孔腔（APC）。通常显示，可以通过遵循对RPC中混合对流的基础研究建立的规则来定性地推断与每种配置和热点强度相关的流动模式。

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