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Steady and Unsteady Measurements of Flows about a Car Model by Use of a 5-Hole Pitot Tube
Published October 03, 2012 by Society of Automotive Engineers of Japan in Japan
The aim of the present study is to establish steady and unsteady measurement system of flows by use of a 5-hole pitot tube, apply them to measurements of flows about a notchback car model in wind-tunnel experiments, and clarify the mechanism for improvements of aerodynamic characteristics by the rear spoiler. About the 5-hole pitot tube, procedure of velocity vector measurements and extension to unsteady measurements is presented. The wind-tunnel experiments were carried out with the moving belt. As results, the flow structure was clearly visualized with this technique and the course for improvements of aerodynamic characteristics has been easily attained.