中国汽车工程师之家--聚集了汽车行业80%专业人士 

论坛口号:知无不言,言无不尽!QQ:542334618 

本站手机访问:直接在浏览器中输入本站域名即可 

搜索附件  
汽车工程师之家 附件中心 常用软件区 『CFD流体力学Fluent&Star-CD』 CFdesign在汽车电控模块热分析中的应用.pdf

CFdesign在汽车电控模块热分析中的应用.pdf

 

CFdesign在汽车电控模块热分析中的应用:
Hideo Yoshino a , Motoo Fujii b, Xing Zhang b, Takuji Takeuchi a, and Souichi Toyomasu a
a) Fujitsu Kyushu System Engineering Limited, Fukuoka 814-8589, Japan
b) Institute of Advanced Material Study, Kyushu University, Kasuga 816-8580, Japan

Experimental and numerical studies are carried out for the conjugate heat transfer of an electronic module package cooled by air. Firstly, the heat conduction experiment was conducted to obtain the surface temperature profiles and to estimate the total conductive resistance and natural convection heat transfer rate to air from the outer wall of duct, where the same type two module packages were fixed opposite at the bottom and top inner walls of duct and glass wool was filled inside the gap. The measured temperature profiles were compared with those obtained by the corresponding numerical simulations and the heat transfer coefficient at the outer wall of duct was estimated. Secondly, the convective heat transfer experiment was done for a single module package attached on the bottom wall of the duct by switching three fans on and off in various combinations. As for the surface temperature profiles, the numerical results agree well with the experimental ones. When the thermal conductivity of printed circuit board is varied, however, the heat transfer coefficients based on the conventional definition could not be summarized with a unique correlation due to the effects of conjugate heat transfer. Introducing an effective heat transfer area has solved the problems and a unique correlation is proposed.Numerical simulations also clarified the effect of thermal conductivity ratio on the non-dimensional effective heat transfer area, and further the heat transfer characteristics when two or more module packages are set in the same duct.

QQ|手机版|小黑屋|Archiver|汽车工程师之家 ( 渝ICP备18012993号-1 )

GMT+8, 15-3-2025 05:33 , Processed in 0.120586 second(s), 18 queries .

Powered by Discuz! X3.5

© 2001-2013 Comsenz Inc.