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[차량운동성능부문] 후미경사각 변화에 따른 자동차 저저항 설계에 관한 수치적 연구
강동민(Dongmin Kang),이종칠(Jongchil Lee),박원규(Warngyu Park),정영래(Youngrae Jung) 한국자동차공학회 2000 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
In this paper, numerical analysis is used to find the effects of rear end slant angle acting on low drag design of an automobile. The rear end slope angles used in this study are 24', 26.6', 28.6', 31.6', 36.4'. The governing equations of the 3-D incompressible Navier-Stokes equations are solved by the iterative time marching scheme. The computed surface pressure coefficients have been compared with experimental results and a good agreement has been achieved. The A- and C-pillar vortex and other flow phenomena around the ground vehicle are evidently shown. The variation of aerodynamic coefficients of drag, lift with respect to rear end slant angle are systematically studied.