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Buoyancy induced convection in a porous cavity with partially thermally active sidewalls

机译:具有部分热活性侧壁的多孔腔中的浮力对流

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This study reports a numerical investigation of the convective flow and heat transfer in a square porous cavity with partially active thermal walls. Five different heating and cooling zones are considered along the vertical walls while the remaining portions of the side walls as well as the top and bottom of the cavity are adiabatic. The Brinkman Forchheimer extended Darcy model is used in the present study and the resulting governing equations are solved by finite volume method with SIMPLE algorithm. The computations are carried out for a wide range of parameters and the results are presented graphically. The results reveal that the location of heating and cooling zones has a significant influence on the flow pattern and the corresponding heat transfer in the enclosure. The location of partial heating has different effect on velocity and heat transfer, and the heat transfer rate approaches to a constant value for very low values of the Darcy number.
机译:这项研究报告了对具有部分活动热壁的方形多孔腔中对流和传热的数值研究。沿垂直壁考虑了五个不同的加热和冷却区域,而侧壁的其余部分以及空腔的顶部和底部是绝热的。在本研究中使用了Brinkman Forchheimer扩展的Darcy模型,并使用SIMPLE算法通过有限体积法求解了由此产生的控制方程。对各种参数进行计算,并以图形方式显示结果。结果表明,加热区和冷却区的位置对外壳中的流型和相应的热传递有重大影响。部分加热的位置对速度和传热有不同的影响,并且对于非常低的达西值,传热速率接近恒定值。

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