| 矩形封闭空间内湿多孔介质自然对流的非达西效应 |
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| 引用本文： | 张浙,杨世铭.矩形封闭空间内湿多孔介质自然对流的非达西效应[J].上海交通大学学报,1997,31(2):56-60. |
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| 作者姓名： | 张浙 杨世铭 |
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| 基金项目： | 博士后科学基金,上海交通大学科技基金 |
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| 摘 要： | 建立了考虑介质内部流体运动惯性力及粘性力的封闭腔内多孔介质非饱和自然对流行为的二维无量纲模型。研究了两侧为恒壁温、上下为绝热条件的含有湿多孔介质的矩形封闭腔内自然对流的非达西效应。通过数值计算，揭示了介质的惯性力、粘性力及Ｄａ数对传热的影响，同时对颗粒导热比、加热条件等对传热的影响进行了分析。
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| 关 键 词： | 多孔介质 自然对流 封闭腔 非达西效应 |
Non Darcian Effects on Natural Convection in a Vertical Enclosure Filled with Unsaturated Porous Media |
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| Zhang Zhe,Yang Shiming.Non Darcian Effects on Natural Convection in a Vertical Enclosure Filled with Unsaturated Porous Media[J].Journal of Shanghai Jiaotong University,1997,31(2):56-60. |
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| Authors: | Zhang Zhe Yang Shiming |
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| Institution: | Department of Power Machinery Engineering |
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| Abstract: | A non dimensional model is formulated to describe natural convection in an enclosure filled with unsaturated porous media, where inertia and viscous forces are considered. The non Darcian effects on natural convection in a vertical unsaturated porous enclosure under constant wall temperature are simulated numerically using finite difference method. The relative importance of interia and viscous forces on natural convection and the effect of Darcy number on heat transfer rate are investigated, and the effects of conductivity ratio and heat conditions on heat transfer rate of enclosure are also analyzed. |
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| Keywords: | porous media natural convection enclosure unsaturation non Darcian effect |
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