百叶窗角度对管带式中冷器传热与阻力特性影响研究  

Study on the influence of shutter angle on the characteristics of heat transfer and drag of tube- type intercooler

作　　者：郑明强[1] 赵津[1] 马秀勤[1] 张秉坤[1] 甯油江 

机构地区：[1]贵州大学机械工程学院,贵州贵阳550025

出　　处：《现代机械》2016年第1期31-35,共5页Modern Machinery

基　　金：贵州省重大科技专项项目;黔科合中大专项字(2014)6004;企业横向课题;模块化车用散热器产品设计与生产线布置与规划;20141001

摘　　要：根据影响中冷器综合性能的因素,建立了四组不同开窗角度的百叶窗翅片计算模型,采用Fluent软件,SIMPLE算法和标准k-ε模型对传热特性和阻力特性进行了仿真分析,得到不同开窗角度下中冷器空气侧的温度、压力和换热系数,及中冷器综合性能评价因子。研究发现换热主要集中在百叶窗前端,阻力损失主要集中在翅片区域;压降随着开窗角度的增大而增大;在相同的工况条件下,开窗角度为27°时,翅片表面传热系数最大,具有更好的综合性能。计算结果为中冷器散热带结构设计提供了参考。According to the factors affecting intercooler＇s comprehensive performance,four calculation models for louver fin at different louver angles are established. Using FLUENT software,SIMPLE algorithm and the standard k- ε model,simulation analysis is carried out to examine the characteristics of heat transfer and resistance,through which the temperature,pressure and heat transfer coefficient of the intercooler＇s airside at different louver angles are obtained,and the evaluation factors of its comprehensive performance are worked out. The study shows that the heat transfer mainly concentrates on the front end of the louver window,the resistance loss mainly occurs in the fin,and that the pressure drop increases with the increase of the louver angle. It is also found that,under the same conditions,when the louver angle is 27 degree,the heat transfer coefficient on the fin surface is the largest,which shows better comprehensive properties. The results would provide reference for future structure design for the cooling fin of intercooler.

关 键 词：中冷器 百叶窗翅片 压降 传热系数 结构设计 

分 类 号：TH16[机械工程—机械制造及自动化] TK172[动力工程及工程热物理—热能工程]