化工学报Issue(3)：879-883,5.DOI:10.3969/j.issn.0438-1157.2014.03.016
孔隙随机结构对非均质多孔泡沫导热性能的影响
Influence of random porosity structure on thermal conductivity of heterogeneous porous foam
摘要
Abstract
Porous foam is a novel functional material, which have low density, high specific surface area and particular performance. However, porous foam is always heterogeneous, the distribution of pore structure is random. In this study, a random parameter, pore uniformity U, is proposed to study the thermal conductivity of heterogeneous porous foam and analyze the influence of pore uniformity on its effective thermal conductivity based on graphite foam. Numerical results show that the thermal conductivity of porous foam material decreases with the increase of the randomness of pore structure. A relationship between pore uniformity, porosity and thermal conductivity of heterogeneous graphite foam is proposed and compared with those in literature. The present results are in reasonable agreement with the measured data of ORNL and reflect the influence of pore structures.关键词
多孔介质/随机结构/孔隙均匀度/有效热导率/热传导/数值模拟Key words
porous medium/stochastic structure/pore uniformity/effective thermal conductivity/heat conduction/numerical simulation分类
能源科技引用本文复制引用
张新铭,王济平,谷沁洋..孔隙随机结构对非均质多孔泡沫导热性能的影响[J].化工学报,2014,(3):879-883,5.基金项目
重庆市科技攻关计划项目(81826)；“211工程”三期建设项目(S-09101)；中央高校基本科研业务费资助项目（CDJXS11140014）。@@@@ supported by the Chongqing Research Programs Funded Projects (81826)， the Three Construction Projects of the“211 Project”(S-09101) and the Central Universities Fundamental Research Funded Project (CDJXS11140014) （81826）
