文献类型：期刊文献

英文题名：Optimal structure of damaged tree-like branching networks for the equivalent thermal conductivity

作者：Miao, Tongjun[1,3];Chen, Aimin[2];Xu, Yan[1];Yang, Shanshan[3];Yu, Boming[3]

第一作者：苗同军;Miao, Tongjun

通讯作者：Yu, BM[1]

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), Huazhong Univ Sci & Technol, Sch Phys, 1037 Luoyu Rd, Wuhan 430074, Hubei, Peoples R China.

年份：2016

卷号：102

起止页码：89-99

外文期刊名：INTERNATIONAL JOURNAL OF THERMAL SCIENCES

收录：;EI(收录号：20160501867141);Scopus(收录号：2-s2.0-84955469423);WOS:【SCI-EXPANDED(收录号:WOS:000370109800009)】；

基金：This study was supported by the National Natural Science Foundation of China (through Grant No. 51576077) and the Science and Technology Program of Department of Science and Technology of Henan Province, China (through Grant No. 152102210201).

语种：英文

外文关键词：Damage; Tree-like branching networks; Optimal structure; Thermal conductivity

摘要：Damage of tree-like branching networks has being widely received considerable attention due to their wide existence in nature, engineering, cardiovascular system, lungs and cooling system of micro channels for electronic components. In the present work, we suppose the damaged number of channels of at some branching level of a tree-like branching network, and then the network becomes asymmetric. The transport properties of fluid flow and heat transfer properties in the damaged network will significantly differ from those in an undamaged network. The equivalent thermal conductivity of the damaged network is derived in this work. We find that the damaged channel number and branching levels have significant effect on optimal diameter ratio and the optimal thermal conductivity. It is found that the larger number of damaged channels results in the lower optimal thermal conductivity and the higher optimal diameter ratio. While the higher damaged branching levels lead to the lower optimal diameter ratio and higher optimal thermal conductivity. It is also found that the length ratios of the channels and total number of branching levels have no effect on optimal diameter ratio and the optimal thermal conductivity of damaged network. The present results may provide the important theoretical base for research and design of thermal transport systems. (C) 2015 Elsevier Masson SAS. All rights reserved.