客车侧围格栅对发动机舱内热环境的影响

›› 2012, Vol. ›› Issue (03): 563-568.

客车侧围格栅对发动机舱内热环境的影响

王晶^1,2, 张成春¹, 张春艳¹, 任露泉¹

1. 吉林大学工程仿生教育部重点实验室, 长春 130022;
2. 吉林大学公共教学中心, 长春 130062

收稿日期:2011-07-17 出版日期:2012-05-01
通讯作者: 张成春(1976-),男,副教授.研究方向:仿生流体工程理论与应用.E-mail:jluzcc@jlu.edu.cn E-mail:jluzcc@jlu.edu.cn
基金资助:
国家自然科学基金青年基金项目(51106062);国家自然科学基金联合基金项目(U1134109);高等学校博士学科点专项科研基金(新教师类)(20110061120048).

Effect of bus side grill on engine underhood thermal environment

WANG Jing^1,2, ZHANG Cheng-chun¹, ZHANG Chun-yan¹, REN Lu-quan¹

1. The Key Laboratory of Bionics Engineering, Ministry of Education, Jilin University, Changchun 130022, China;
2. Teaching Center of Basic Course, Jilin University, Changchun 130062, China

Received:2011-07-17 Online:2012-05-01

摘要/Abstract

摘要： 应用数值模拟和试验相结合的方法,对比研究了高速工况下某客车发动机舱左侧格栅封闭前后舱内流场及温度场的变化。结果表明:从左侧格栅流入发动机舱的冷空气流量远大于从格栅边缘流出的热气流的流量。左侧格栅封闭前,格栅处流入的气流对后舱门反射的热气流有较强的阻碍作用,左侧格栅封闭后,这种阻碍作用减弱,在车底气流的带动下,热流体从车底更顺畅地流出发动机舱。左侧格栅封闭不会对发动机舱的热环境造成不良影响。

关键词: 公路运输, 热管理, 发动机舱, 客车侧围格栅, 热流体

Abstract: Changes of underhood flow field and temperature field of at high-speed conditions before and after closure of the left grill of a bus engine compartment were analyzed with numerical simulation and experiment. The results indicated that: the rate of the cooling air flowing into the engine compartment from the left grill is higher than the rate of the hot air flowing out of the engine compartment from the fringe of grill. Before closure of the left grill of the bus engine compartment, the hot air reflected by the back door of the engine compartment can be hampered strongly by the cooling air flowing into the engine compartment. Closure of the left grill weakens the cooling air hampering, therefore, under the vehicle bottom air driving, the hot air flows out of the engine compartment more smoothly. Accordingly, closure of the left grill can not adversely affect the underhood thermal environment.

Key words: power machinery and engineering, thermal management, engine underhood, bus side grills, thermal fluid

中图分类号:

TK441.2

王晶, 张成春, 张春艳, 任露泉. 客车侧围格栅对发动机舱内热环境的影响 [J]. , 2012, (03): 563-568.

WANG Jing, ZHANG Cheng-chun, ZHANG Chun-yan, REN Lu-quan. Effect of bus side grill on engine underhood thermal environment[J]. , 2012, (03): 563-568.

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