抄録
Recently the high performance of the road vehicle in high speed including the improvement of its fuel economy is strongly desired. In this paper the effect of rear body shape on the wake structure behind the vehicle and on its aerodynamic characteristics under a blockaged test section is clarified, considering that the aerodynamic characteristics of the vehicle strongly depends on the condition of the wake. Three different rear body shapes, with the same front and center body shape, are used. The flow condition in the wake is observed by the fluorescent taft grid method. Total pressure distributions in the wake are measured. The relations between the rear body shape and the wake structure are also discussed.
