某车型发动机舱稳态和瞬态的CFD分析  

CFD Analysis of the Model of Steady State and Transient Engine Compartment

作　　者：郭健忠[1] 吴建立[1] 程峰 罗仁宏[1] Guo Jianzhong;Wu Jianli;Cheng Feng;Luo Renhong(Vehicle engineering Department,Wuhan University of Science and Technology,Wuhan 430081,China)

机构地区：[1]武汉科技大学汽车与交通工程学院,武汉430081

出　　处：《科技通报》2017年第9期199-202,共4页Bulletin of Science and Technology

基　　金：国家自然科学基金资助项目(项目编号:51105283)

摘　　要：某前置客车在复杂的行驶工况下导致发动机舱过热,出现电子器件过早老化的问题。运用三维分析软件STAR-CCM+对稳态的客车模型进行仿真分析,并利用试验标定仿真结果,通过分析导致机舱温度过高的原因,提出机舱结构改进方法。在稳态分析的基础上进一步对瞬态工况下的机舱环境分析,得出机舱高温的变化云图区域,通过更改敏感元器件的布置或增加防护罩等措施,保护机舱内的电子器件,防止部件老化,延长敏感部件的使用寿命。Pre-bus in a complex driving conditions lead to overheating of the engine compartment,theemergence of electronic devices premature aging.The use of three-dimensional analysis software STARCCM+bus model steady state simulation analysis and simulation results using experimental calibrationby analyzing the reasons leading to the cabin temperature is too high,we put forward nacelle structureimprovements.On the basis of steady-state analysis of the further conditions of the cabin environmenttransient analysis,the cabin temperature change cloud area,by changing the arrangement of sensitivecomponents or adding shields and other measures to protect the electronic devices inside the cabin toprevent part of aging,extend the life of sensitive components.

关 键 词：发动机舱 瞬态 稳态 试验 

分 类 号：U464[机械工程—车辆工程] TH16[交通运输工程—载运工具运用工程]