한국전산유체공학회:학술대회논문집
- 2008.03b
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- Pages.51-53
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- 2008
The Numerical Assessment with Modified Vehicle Rear Body Shape on the Aerodynamic Crosswind Stability Improvement
차량 후미부 형상 변경에 따른 공력 횡풍 안정성 개선에 관한 수치해석 연구
- Choi, Sang-Yeol (General Motors Daewoo Auto & Technology Co., Technical Center) ;
- Kim, Yonung-Tae (General Motors Daewoo Auto & Technology Co., Technical Center) ;
- Chang, Youn-Hyuck (General Motors Daewoo Auto & Technology Co., Technical Center) ;
- Ha, Jong-Paek (General Motors Daewoo Auto & Technology Co., Technical Center) ;
- Kim, Eun-Seok (General Motors Daewoo Auto & Technology Co., Technical Center)
- Published : 2008.03.26
Abstract
The vehicle aerodynamic crosswind characteristics are mainly governed by the coefficient of side force and yawing moment. These performances affect not only the driving comfort which can be felt by driver but also the safety due to the instability of vehicle. The aims of this investigation are to improve the aerodynamic crosswind performance of sedan vehicle under the crosswind conditions. In order to improve the crosswind stability, numerical analysis has been performed by modifying the rear body shape of vehicle. As the results, we observed about 20% reduction of yawing moment coefficient relative to the base vehicle.
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