Buoyancy Driven Flow in Saturated Porous Media

H. Sakamoto; F. A. Kulacki

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Buoyancy Driven Flow in Saturated Porous Media

机译：饱和多孔介质中的浮力驱动流

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Measurements are reported of heat transfer coefficients in steady natural convection on a vertical constant flux plate embedded in a saturated porous medium. Results show that heat transfer coefficients can be adequately determined via a Darcy-based model, and our results confirm a correlation proposed by Bejan [Int. J. Heat Mass Transfer. 26(9), 1339-1346 (1983)]. It is speculated that the reason that the Darcy model works well in the present case is that the porous medium has a lower effective Prandtl number near the wall than in the bulk medium. The factors that contribute to this effect include the thinning of the boundary layer near the wall and an increase of effective thermal conductivity.

机译：报告了在埋入饱和多孔介质中的垂直恒定通量板上稳定自然对流中的传热系数的测量结果。结果表明，可以通过基于Darcy的模型充分确定传热系数，我们的结果证实了Bejan [Int。 J.传热传质。 26（9），1339-1346（1983）]。据推测，达西模型在当前情况下运行良好的原因是，多孔介质在壁附近的有效普朗特数比散装介质中的有效普朗特数低。造成这种影响的因素包括壁附近边界层的变薄和有效导热率的增加。

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来源
《Journal of Heat Transfer》 |2007年第6期|p.727-734|共8页
作者
H. Sakamoto; F. A. Kulacki;
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作者单位

Thermodynamics and Heat Transfer Laboratory, Department of Mechanical Engineering, University of Minnesota, Minneapolis, MN 55455;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类热力工程、热机;
关键词
porous media; natural convection;

机译：多孔介质;自然对流;

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4. BUOYANCY-DRIVEN FLOW IN SATURATED POROUS MEDIA [C] . Hitoshi Sakamoto, Francis A. Kulacki American Society of Mechanical Engineers(ASME) Summer Heat Transfer Conference(HT2005) vol.1; 20050717-22; San Francisco,CA(UA) . 2005

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7. Multiple steady state horizontal buoyancy induced flows in porous media saturated with cold water [O] . Chen Y.-Y., Wang C.-A. 1989

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Buoyancy Driven Flow in Saturated Porous Media

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