文献类型：期刊文献

英文题名：AN ANALYTICAL MODEL FOR EFFECTIVE THERMAL CONDUCTIVITY OF THE MEDIA EMBEDDED WITH FRACTURE NETWORKS OF POWER LAW LENGTH DISTRIBUTIONS

作者：Miao, Tongjun[1];Chen, Aimin[2];Jiang, Lijuan[1];Zhang, Huajie[1];Liu, Junfeng[1];Yu, Boming[3]

通讯作者：Miao, TJ[1];Yu, BM[2]

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

第一机构：新乡学院

通讯机构：[1]corresponding author), Xinxiang Univ, Sch Phys & Elect Engn, Xinxiang 453003, Henan, Peoples R China;[2]corresponding author), Huazhong Univ Sci & Technol, Sch Phys, Wuhan 430074, Hubei, Peoples R China.|[11071]新乡学院;

年份：2022

卷号：30

期号：01

外文期刊名：FRACTALS-COMPLEX GEOMETRY PATTERNS AND SCALING IN NATURE AND SOCIETY

收录：;EI(收录号：20220111414992);Scopus(收录号：2-s2.0-85121984492);WOS:【SCI-EXPANDED(收录号:WOS:000766635200083)】；

基金：This work was supported by the National Natural Science Foundation of China (Grant No. U1704132), the Research Key Project of Science and Technology of Education Bureau of Henan Province, China (Grant No. 17A470013) and the Key scientific research projects of higher education institutions in Henan Province (21A430031).

语种：英文

外文关键词：Fracture Networks; Thermal Conductivity; Power Law; Analytical Model

摘要：The effective thermal conductivity of porous media is of steady interest in the design of new materials. In this study, an analytical model for dimensionless effective thermal conductivity of media embedded with fracture networks of the power law length distributions is proposed. It is found that the proposed dimensionless effective thermal conductivity is a function of micro-structural parameters of media, such as the porosity (phi) and fracture orientation (dip theta and azimuth phi). The present results show that the dimensionless effective thermal conductivity of the media increases with the increase in the ratio (k(s)/k(f)) and the power law exponent alpha at k(s)/k(f) < 1. Inversely, when k(s)/k(f) > 1, it decreases with the increase in the power law exponent alpha. In addition, the dimensionless effective thermal conductivity is gradually independent of the orientation as the ratio k(s)/k(f) > 1. The present model may provide a significant insight into the mechanism of heat transfer in the media embedded with fracture networks of power law length distributions.