车载主机箱CPU散热器结构设计及温度场分析  

Structure Design and Temperature Field Analysis of On-Board Main Engine Box CPU Radiator

作　　者：陶美 龚俊杰[1] TAO Mei;GONG Jun-jie(School of Mechanical Engineering,Yangzhou University,Yangzhou 225003,China;Yangzhou Baojun Electronics Co.,Ltd.of CETC,Yangzhou 225003,China)

机构地区：[1]扬州大学机械工程学院,江苏扬州225003 [2]中电科技扬州宝军电子有限公司,江苏扬州225003

出　　处：《机械工程与自动化》2020年第5期69-70,共2页Mechanical Engineering & Automation

摘　　要：首先,经相关理论计算确定了散热器的肋间距为5 mm,肋高为15 mm;然后,利用自建实验台对散热器在3种不同功率、不同风速下的散热过程进行对比实验分析,说明了散热器在高功率情况下散热状况受气体流速影响较大;最后运用Workbench仿真软件对不同肋厚的散热器结构进行热分析,得到了在风冷对流工况下,肋厚为1.5 mm,风速为1.0 m/s时散热器的散热性能最佳,且满足了散热设计要求。First of all,it is determined by related theoretical calculations that the radiator rib spacing is 5 mm and the rib height is 15 mm.Then,the self-built experimental platform is used to compare the heat dissipation process of the radiator at three different powers and different wind speeds,which shows that the heat dissipation of the radiator is greatly affected by the gas flow rate under high power conditions.Finally,using Workbench simulation software to conduct thermal analysis on the radiator structure with different rib thicknesses,it is obtained that the heat dissipation performance of the radiator is the best when the rib thickness is 1.5 mm and the wind speed is 1.0 m/s under air-cooled convection conditions,and it meets the heat dissipation design requirements.

关 键 词：CPU散热器 散热性能 结构设计 车载主机箱 温度场 

分 类 号：TP391.7[自动化与计算机技术—计算机应用技术] U464.138.2[自动化与计算机技术—计算机科学与技术]