지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2013.5
- 수록면
- 1,493 - 1,497 (5page)
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초록· 키워드
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Drag reduction of a running vehicle is very important issue for energy savings and emission reduction. Especially for a solar powered electric vehicle, the drag reduction and weight lightening are two serious problems to be solved to extend the driving distance with the given energy source. In this study, the ground effect of an airfoil shaped road vehicle was studied for an optimum body design of an ultra-light solar powered electric vehicle. Clark-Y airfoil shape was adopted to the body shape of the model vehicle to reduce aerodynamic drag.
From the study, it was found that the drag of the model vehicle was reduced as the height(h) between ground and the lower surface of the model vehicle was decreased. It is due to the reduction of the down-wash decreasing the induced drag of the vehicle. The lift was also decreased as the height was decreased. It is due to the turbulent boundary layer developed beneath the vehicle body. The drag is classified into two types; form drag and friction drag. The fraction ratio of form drag to friction one is 76 to 24 on the model vehicle. As the height(h) of the model vehicle increases the form drag increase but the friction drag is in reverse.
From the study, it was found that the drag of the model vehicle was reduced as the height(h) between ground and the lower surface of the model vehicle was decreased. It is due to the reduction of the down-wash decreasing the induced drag of the vehicle. The lift was also decreased as the height was decreased. It is due to the turbulent boundary layer developed beneath the vehicle body. The drag is classified into two types; form drag and friction drag. The fraction ratio of form drag to friction one is 76 to 24 on the model vehicle. As the height(h) of the model vehicle increases the form drag increase but the friction drag is in reverse.
목차
Abstract
1. 서론
2. 모델차량의 형상과 공력특징
2. 모델차체의 공력특성
3. 수치해석 연구를 위한 해석기법과 조건
4. 연구결과 및 고찰
5. 결론
참고문헌
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UCI(KEPA) : I410-ECN-0101-2014-550-002588874