板翅式冷却器结构参数优化与仿真  

Structural Parameter Optimization and Simulation of Plate Fin Cooler

作　　者：方博 刘磊[2] 李建秋[3] 张钦国 FANG Bo;LIU Lei;LI Jian-qiu;ZHANG Qin-guo(Department of Electrical and Mechanical Engineering,Jiangxi Vocational College of Applied Engineerin;College of energy and environment,Zhongyuan University of Technolog;Tsinghua University,State Key Laboratory of Automotive Safety and Energ)

机构地区：[1]江西应用工程职业学院机电工程系,江西萍乡337042 [2]中原工学院能源与环境学院,河南郑州450007 [3]清华大学汽车安全与节能国家重点实验室,北京100084

出　　处：《机械设计与制造》2018年第7期229-231,235,共4页Machinery Design & Manufacture

基　　金：国家自然科学基金资助项目(U1564209);国家科技支撑计划项目(2015BAG06B00);江西省高校人文社会科学研究项目(JY17231)

摘　　要：为了提高机油冷却器的散热效率从而降低机油温度以保证发动机润滑系统的可靠性,以波纹板式散热器为研究对象,采用遗传算法对波纹板的结构参数进行了目标优化,采用计算流体动力学的方法模拟了散热器内部的流场和温度场的分布情况,并对优化结果的有效性进行了模拟验证。仿真结果表明:波纹板的节距、高度、倾角对流体的流动和换热具有重要的影响;当波纹节距为13.7mm、波纹高度为5.2mm、波纹倾角为49.5°时散热器的工作性能最佳,并且随着雷诺数的增加,TPF的值先增大后减小。通过试验测试验证了遗传优化算法和CFD仿真结果的准确性,研究方法对波纹板式散热器的优化设计具有实际的意义。In order to improve the thermal efficiency of oil cooler and reduce the oil temperature to assure the reliability of the engine lubrication system,The corrugated plate structure parameters were optimized using the genetic algorithm with corrugated board type radiator as the research object,the distribution of the internal flow field and temperature field were simulated based on the method of computational fluid dynamics. And the simulations were carried out to verify the validity of the optimization results. The simulation results show that the corrugated plate pitch,high and dip Angle have an important influence on the fluid flow and heat transfer. When corrugated board pitch is 13.7 mm,height is 5.2 mm and inclination angle is 49.5°,The radiator has the best working performance.And with the increase of Reynolds number,the value of TPF first increases then decreases. The research method has the practical significance for optimization design of corrugated board type radiator.

关 键 词：遗传算法 CFD仿真 散热特性 流固耦合 评价因子 

分 类 号：TH16[机械工程—机械制造及自动化] U463.83[机械工程—车辆工程]