基于遗传算法的小型化液压油源用错列翅片式换热器优化研究

doi:10.3901/JME.2021.24.049

机械工程学报 ›› 2021, Vol. 57 ›› Issue (24): 49-57.doi: 10.3901/JME.2021.24.049

• 特邀专栏：液压元件及系统轻量化关键技术 • 上一篇下一篇

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基于遗传算法的小型化液压油源用错列翅片式换热器优化研究

彭敬辉^1,2, 张亚运¹, 徐阳¹, 杨睿¹, 袁立鹏¹, 李松晶¹

1. 哈尔滨工业大学流体控制及自动化系哈尔滨 150001;
2. 浙江大学流体动力与机电系统国家重点实验室杭州 310027

收稿日期:2021-09-28 修回日期:2021-10-25 出版日期:2021-12-20 发布日期:2022-02-28
通讯作者: 李松晶(通信作者),女,1970年出生,博士,教授,博士研究生导师。主要研究方向为液压元件与系统设计、功能流体应用、管路动态分析等。E-mail:lisongjing@hit.edu.cn
作者简介:彭敬辉,男,1987年出生,博士,助理研究员。主要研究方向为液压元件与系统设计、功能流体应用、热流固耦合分析等。E-mail:jpeng@hit.edu.cn
基金资助:
国家重点研发计划（2018YFB2000701）和流体动力与机电系统国家重点实验室开放基金课题（GZKF-202025）资助项目。

Optimization of Staggered Fins Heat Exchangers for Miniaturized Hydraulic Power Units Using Genetic Algorithm

PENG Jinghui^1,2, ZHANG Yayun¹, XU Yang¹, YANG Rui¹, YUAN Lipeng¹, LI Songjing¹

1. Department of Fluid Control and Automation, Harbin Institute of Technology, Harbin 150001;
2. State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310027

Received:2021-09-28 Revised:2021-10-25 Online:2021-12-20 Published:2022-02-28

摘要/Abstract

摘要： 紧凑、轻量化、高效节能型换热器对高端移动装备中液压油源的小型化至关重要。基于不同普朗特数流体的换热和流动阻力经验关联式设计并优化了一种矩形错列翅片式换热器。推导出相关质量、出口温度和压力损失的函数模型，通过灵敏度分析研究关键参数对目标函数的影响，从而评估各变量对换热器综合性能的贡献度。在此基础上，利用遗传算法对换热器的关键参数进行优化。同时，通过数值模拟研究优化前后换热器的流动特性和换热性能。结果表明，理论计算与数值仿真结果吻合良好。优化后换热器质量减小25.79%，换热器降温幅度提高25.24%。研究成果对液压油源的小型化和轻量化具有积极的促进作用。

关键词: 小型化油源, 换热器, 遗传算法, 优化设计, 数值模拟

Abstract: The compact, lightweight, and energy-efficient heat exchanger is significant for the miniaturization of hydraulic power unit in high-performance mobile equipment. A rectangular staggered fins heat exchanger(RSFHE) is presented and optimized based on the empirical correlations of heat transfer and flow resistance for the fluids with different Prandtl numbers. Function models including the related mass, outlet temperature and pressure drop are deduced. A sensitivity analysis is presented to investigate the effect of key parameters on function models, which can evaluate the contributions of variables to the comprehensive performance of the heat exchanger. Based on these function models, the cooler key parameters are optimized using genetic algorithm(GA). Moreover, numerical simulations are conducted to explore the thermal-hydraulic performance of the original and optimized heat exchangers. The results show that the inlet-outlet temperature difference and the pressure drop of the hydraulic oil between the theoretical and numerical results achieve a goodagreement. At the same time, the total weight reduces by 25.79% and the inlet-outlet temperature difference of the hydraulic oil increases by 25.24% for the optimized heat exchanger, which is a great improvement for the miniaturization and lightweight of the hydraulic power unit.

Key words: miniaturized hydraulic power units, heat exchanger, genetic algorithm, optimization design, numerical simulation

中图分类号:

TG137

彭敬辉, 张亚运, 徐阳, 杨睿, 袁立鹏, 李松晶. 基于遗传算法的小型化液压油源用错列翅片式换热器优化研究[J]. 机械工程学报, 2021, 57(24): 49-57.

PENG Jinghui, ZHANG Yayun, XU Yang, YANG Rui, YUAN Lipeng, LI Songjing. Optimization of Staggered Fins Heat Exchangers for Miniaturized Hydraulic Power Units Using Genetic Algorithm[J]. Journal of Mechanical Engineering, 2021, 57(24): 49-57.

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基于遗传算法的小型化液压油源用错列翅片式换热器优化研究

Optimization of Staggered Fins Heat Exchangers for Miniaturized Hydraulic Power Units Using Genetic Algorithm

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