Constructal optimization for leaf-like body based on maximization of heat transfer rate

被引：17

作者：

Chen, Lingen ^{[1
,2
,3
]}

Feng, Huijun ^{[1
,2
,3
]}

Xie, Zhihui ^{[1
,2
,3
]}

Sun, Fengrui ^{[1
,2
,3
]}

机构：

[1] Naval Univ Engn, Inst Thermal Sci & Power Engn, Wuhan 430033, Peoples R China

[2] Naval Univ Engn, Mil Key Lab Naval Ship Power Engn, Wuhan 430033, Peoples R China

[3] Naval Univ Engn, Coll Power Engn, Wuhan 430033, Peoples R China

来源：

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER | 2016年 / 71卷

基金：

中国国家自然科学基金;

关键词：

Constructal theory; Leaf-like body; Maximum heat transfer rate; Generalized thermodynamic optimization; T-SHAPED CAVITY; MASS-TRANSFER; NUMERICAL-ANALYSIS; THERMAL-ANALYSIS; FLOW RESISTANCE; TREE NETWORKS; ANNULAR FIN; DESIGN; PERFORMANCE; VOLUME;

D O I：

10.1016/j.icheatmasstransfer.2015.12.022

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A model of a first order leaf-like body (FOLLB), which is assembled by many elemental leaf-like bodies (ELLBs), is established in this paper by using Constructal theory. The maximum dimensionless heat transfer rate (DHTR) and the optimal structure of the FOLLB are obtained. It shows that there exist an optimal dimensionless cross-sectional area of the elemental vein, an optimal dimensionless thickness of the FOLLB, as well as an optimal number of ELLBs in the FOLLB which lead to the triple maximum DHTR of the FOLLB. The heat transfer performance (HTP) of the FOLLB becomes better with the increases in Biot number and the thermal conductivity ratio. When the optimal construct of the FOLLB was compared with that of the ELLB, it was found that the maximum DHTR of the FOLLB is increased by 69.83% for the same body volume, and the HTP of the body can be greatly improved. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：157 / 163

页数：7

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