Modeling the effective thermal conductivity of random packing of spheres through densification

被引：113
|
作者：
Argento, C [1 ]
Bouvard, D [1 ]
机构：
[1] UJF, INPG, CNRS, LAB SOLS, F-38041 GRENOBLE, FRANCE
来源：
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 1996年 / 39卷 / 07期
关键词：
D O I：
10.1016/0017-9310(95)00257-X
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The thermal conductivity of densified random packing of spheres is studied. First, the resistance to heat flow of two touching deformed spheres is determined by the finite element method. A discrete model is proposed to extend the single contact results to random packings of spheres. The packings are densified by expanding the particle radius. Finally a continuous analytical expression is proposed to describe the relation between the effective thermal conductivity and the relative density of the packing.
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页码：1343 / 1350
页数：8
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