Abstract
In this study, the influence of the undersurface flow of a high speed move object on dynamics are studied. The concrete problems concerning this study are anticipated unstable vibration caused by undersurface flow of a racing car and a high speed surface transportation vehicle with the speed improvement. The opened literature though that they imagined that the concrete examination has been made on the racing car in the manufacturer, that it is very few. In this report, we simplified the problem as much as possible, and the relation between flow and dynamics are examined. Flow around wedged shape move object are calculated with CFD and these results are introduced to dynamic simulation program. Some simulation results are shown.
