文献类型：期刊文献

英文题名：Analysis of axial thermal conductivity of dual-porosity fractal porous media with random fractures

作者：Miao, Tongjun[1];Cheng, Sujun[1];Chen, Aimin[2];Yu, Boming[3]

第一作者：苗同军

通讯作者：Miao, TJ[1];Yu, BM[2]

机构：[1]Xinxiang Univ, Coll Phys & Elect Engn, Xinxiang 453003, Henan, Peoples R China;[2]Xinxiang Univ, Coll Chem & Chem Engn, Xinxiang 453003, Henan, Peoples R China;[3]Huazhong Univ Sci & Technol, Sch Phys, 1037 Luoyu Rd, Wuhan 430074, Hubei, Peoples R China

第一机构：新乡学院物理与电子工程学院

通讯机构：[1]corresponding author), Xinxiang Univ, Coll Phys & Elect Engn, Xinxiang 453003, Henan, Peoples R China;[2]corresponding author), Huazhong Univ Sci & Technol, Sch Phys, 1037 Luoyu Rd, Wuhan 430074, Hubei, Peoples R China.|[110717]新乡学院物理与电子工程学院;[11071]新乡学院;

年份：2016

卷号：102

起止页码：884-890

外文期刊名：INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER

收录：;EI(收录号：20162902605995);Scopus(收录号：2-s2.0-84978150660);WOS:【SCI-EXPANDED(收录号:WOS:000382410300083)】；

基金：This work was supported by the National Natural Science Foundation of China (through Grant No. 51576077 and 10932010), the Science and Technology Program of Department of Science and Technology of Henan Province, China (through Grant No. 152102210201), the Innovation Talants Program of Science and Technology of Institution of Higher Education of Henan Province, China (Grant No.14HASTIT044), the Research Key Project of Science and Technology of Education Bureau of Henan Province, China (Grant No. 14A140030, 17A470013) and the Key Project for Theoretical Physics of Xinxiang University.

语种：英文

外文关键词：Effective thermal conductivity; Dual-porosity media; Fractal; Fracture

摘要：Heat transfer in porous media has received steady attention in many applications such as in energy, aerospace, biomedicine and chemical engineering. In this work, based on the fractal characteristics of pores and fractures in porous media, the analytical solution of axial effective thermal conductivities is proposed for saturated dual-porosity media. It is found that the proposed axial effective thermal conductivity is a function of geometrical parameters of dual-porosity media, such as the porosities (phi(m), phi(f)), fractal dimensions (D-f,D-1) for porous matrix and fractured network, tortousity fractal dimension (D-T), and fracture orientation (dip theta, azimuth alpha). The effects of the microstructural parameters on the effective thermal conductivity of the media are analyzed systematically. The model predictions are compared with the available experimental data, and good agreement between them is found. The present model may provide a better understanding of the physical mechanisms of heat transfer in dual-porosity media than conventional models. (C) 2016 Elsevier Ltd. All rights reserved.