汽车工程
汽車工程
기차공정
AUTOMOTIVE ENGINEERING
2014年
10期
1254-1257
,共4页
肖能%王小碧%王伟民%史建鹏
肖能%王小碧%王偉民%史建鵬
초능%왕소벽%왕위민%사건붕
前扰流板%风阻系数%进气量%冷却系统
前擾流闆%風阻繫數%進氣量%冷卻繫統
전우류판%풍조계수%진기량%냉각계통
front spoiler%drag coefficient%air inflow rate%cooling system
为研究前扰流板高度变化对发动机舱进气量和整车风阻系数的影响，首先采用CFD软件对整车的基础模型进行气动性能仿真，并与实车风洞试验结果进行对比，确定仿真模型的计算精度；然后在该基础模型上添加不同高度的前扰流板进行仿真。结果显示，在前保险杠下方添加高度合适的前扰流板可有效降低整车风阻系数和提高冷却系统进气量。
為研究前擾流闆高度變化對髮動機艙進氣量和整車風阻繫數的影響，首先採用CFD軟件對整車的基礎模型進行氣動性能倣真，併與實車風洞試驗結果進行對比，確定倣真模型的計算精度；然後在該基礎模型上添加不同高度的前擾流闆進行倣真。結果顯示，在前保險槓下方添加高度閤適的前擾流闆可有效降低整車風阻繫數和提高冷卻繫統進氣量。
위연구전우류판고도변화대발동궤창진기량화정차풍조계수적영향，수선채용CFD연건대정차적기출모형진행기동성능방진，병여실차풍동시험결과진행대비，학정방진모형적계산정도；연후재해기출모형상첨가불동고도적전우류판진행방진。결과현시，재전보험강하방첨가고도합괄적전우류판가유효강저정차풍조계수화제고냉각계통진기량。
For studying the effects of front spoiler height on the induction air flow rate of engine compart-ment and the drag coefficient of vehicle, an aerodynamic performance simulation on the base model of vehicle is conducted by using CFD software with its result compared with that of real vehicle tunnel test to ascertain the accura-cy of the model. Then front spoilers with different heights are added on the base model to perform simulations again. The results show that adding front spoiler with appropriate height beneath front bumper can effectively reduce the drag coefficient of vehicle and increase the air inflow rate of cooling system.
