논문 국내 국내전문학술지(KCI급) 유동 제어 장치를 이용한 상용차량의 항력저감 연구 Study on drag reduction of commercial vehicle using flow control device
- 학술지 구분 국내전문학술지(KCI급)
- 게재년월 2023-07
- 저자명 김성호, 김정재
- 학술지명 Journal of the Korean Society of Visualization, Vol. 21, No. 2 (8∼13)
- 발행국가 국내
- 논문언어 한국어
- 연구분야 공학 > 기계공학
홈페이지논문 초록 (Abstract)
The primary challenge in improving fuel efficiency and reducing air pollution for commercial vehicles is reducing their aerodynamic drag. Various flow control devices, such as cab-roof fairing, gap fairing, cab extender, and side skirt have been introduced to reduce drag, however, the drag reduction effect and applicability are different depending on each commercial vehicle model. To evaluate the fuel consumption of heavy vehicles, a comprehensive research approach, including drag force measurement, flow field analysis is required. This study investigated the effect of a cab extender, which installed rear region of cab, on a drag coefficient of commercial vehicle through wind tunnel experiments and CFD. The results showed that the cab extender significantly modified the flow structure around the vehicle, leading to 8.2% reduction in drag coefficient compared to the original vehicle model. These results would provide practical application for enhancing the aerodynamic performance and fuel efficiency of heavy vehicle.