抄録
In order to achieve auto control of a vehicle, the knowledge of frag force acting on an automobile in a line is need. The previous study investigated the drag force acting on the rear and the front test spheres under changing distance between two spheres. In the study, the object shape is planned to be changed from a sphere to a vehicle. The purpose of the study is to investigate a drag force in a difference of a distance between models of automobile. Front automobile and rear one are a truck model and a car model, respectively. The truck model is placed as an obstacle in a flow. Drag force of a car model is measured using a water tunnel in various positions. Particle Image Velocimetry (PIV) is used to measure a flow velocity field around an automobile. As a result, the shape effects of a car model and a load model are discussed comparing with the experiment using spheres.
