Multi-Objective Optimization of Serrated Fin in Plate-Fin Heat Exchanger by Fluid Structure Interaction

被引：4

作者：

Wen J. ^{[1
]}

Li K. ^{[1
]}

Liu Y. ^{[1
]}

Wu M. ^{[1
]}

Wang S. ^{[2
]}

Li Y. ^{[1
]}

机构：

[1] School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an

[2] School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an

来源：

Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University | 2018年 / 52卷 / 02期

关键词：

Multi-objective genetic algorithm; Plate-fin heat exchanger; Response surface; Serrated fin; Stress analysis;

D O I：

10.7652/xjtuxb201802020

中图分类号：

学科分类号：

摘要：

The comprehensive performances of flow resistance, heat transfer and loading capacity of serrated fin in plate-fin heat exchangers are numerically simulated with CFD method and the structure is optimized. Analyzing full 2nd-order polynomial response surface generated by calculating many combinations of input parameters, the effects of the fin height, fin space, fin thickness and fin interrupted length on flow resistance, heat transfer and stress distribution are investigated. Combining response surface with multi-objective genetic algorithm (MOGA), the fin structure is optimized comprehensively by setting the j factor, f factor and maximum stress as the objective functions. Three groups of optimal fin structure are put forward. To demonstrate the effectiveness of optimized structures, the comparison between the original design and optimized structure 3 is performed. The results show that the maximum stress is located on the joint region connecting the right angle of fin structure of first row and clipboard; the effect of fin interrupted length on heat exchange, the effect of fin thickness on flow resistance and the effect of fin interrupted length and fin thickness on stress get the greatest. The FTEF factor of the optimized structure 3 increases by 10.62%, and the maximum stress decreases by 7.9%. © 2018, Editorial Office of Journal of Xi'an Jiaotong University. All right reserved.

引用

页码：130 / 135

页数：5

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