利用流固耦合分析的板翅式换热器锯齿型翅片多目标优化

文键 1; 李科 1; 刘育策 1; 吴孟琛 1; 王斯民 2; 厉彦忠 1

doi:10.7652/xjtuxb201802020

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利用流固耦合分析的板翅式换热器锯齿型翅片多目标优化

更新时间：2025-07-09

- 利用流固耦合分析的板翅式换热器锯齿型翅片多目标优化
- Multi-Objective Optimization of Serrated Fin in Plate-Fin Heat Exchanger by Fluid Structure Interaction
- 西安交通大学学报 2018年52卷第2期页码：130-135
- 作者机构：
  
  西安交通大学能源与动力工程学院,西安,710049
- 作者简介：
- 基金信息：
  
  : 2017-06-10。作者简介: 文键(1976—),女,教授,博士生导师;王斯民(通信作者),男,副教授。基金项目: 国家自然科学基金资助项目(51676146)
- DOI：10.7652/xjtuxb201802020
  中图分类号： TK124
- 网络首发：2018-02-10，
  
  纸质出版：2018
- 稿件说明：
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文键 1, 李科 1, 刘育策 1, 等. 利用流固耦合分析的板翅式换热器锯齿型翅片多目标优化[J]. 西安交通大学学报, 2018,52(2):130-135.

Multi-Objective Optimization of Serrated Fin in Plate-Fin Heat Exchanger by Fluid Structure Interaction[J]. 2018, 52(2): 130-135.
文键 1, 李科 1, 刘育策 1, 等. 利用流固耦合分析的板翅式换热器锯齿型翅片多目标优化[J]. 西安交通大学学报, 2018,52(2):130-135. DOI： 10.7652/xjtuxb201802020.

Multi-Objective Optimization of Serrated Fin in Plate-Fin Heat Exchanger by Fluid Structure Interaction[J]. 2018, 52(2): 130-135. DOI： 10.7652/xjtuxb201802020.

摘要

采用数值模拟方法

从流固耦合的角度

对板翅式换热器常用的锯齿型翅片进行了流动、换热和承压能力等综合性能的分析及结构优化。通过分析基于多组参数点计算结果生成的Full 2nd-Order Polynomial响应平面

研究了翅高、翅厚、翅距、节距对翅片流动、换热及应力分布的影响。在此基础上

结合响应面和多目标遗传算法

选取j因子、f因子和最大应力作为目标函数

对锯齿型翅片进行多目标优化

提出了3种优化翅片结构

并将初始结构与优化结构进行了对比。结果表明:最大应力位于第1排翅片直角边和隔板相连的部位

翅片节距对换热影响最大

翅厚对流动阻力影响最大

而翅片间距和翅厚对应力影响最大; 优化结构3相对于常用结构的热性能因子增加了10.62%

最大应力减少了7.9%。研究结果为板翅式换热器锯齿型翅片的优化设计提供了理论指导。

Abstract

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 F

TEF

factor of the optimized structure 3 increases by 10.62%

and the maximum stress decreases by 7.9%.

关键词

Keywords

references

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YANG Huizhu, WEN Jian, TONG Xin, et al. Optimization design for offset fin in plate-fin heat exchanger with genetic algorithm [J]. Journal of Xi'an Jiaotong University, 2015, 49(12): 90-96.

FEHLE R, KLAS J, MAYINGER F. Investigation of local heat transfer in compact heat exchangers by holographic interferometry [J]. Experimental Thermal and Fluid Science, 1995, 10(2): 181-191.

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KONAK A, COIT D W, SMITH A E. Multi-objective optimization using genetic algorithm: a tutorial [J]. Reliability Engineering System Safety, 2006, 91(9): 992-1007.

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