Abstract
In CFD analysis, it is difficult to predict correctly the lift force of a vehicle in high Reynolds number (Reynolds number=1×10^6) which is correspond to actual run condition. In this study, the numerical analysis and the experiment using wind tunnel were performed, and the numerical and experimental results of lift forces were compared. As a vehicle model, the rectangular vehicle models with round leading edge at the front end were used. It was clarified that LES (Large Eddy Simulation) with DSM (Dynamic Smagorinsky Model) was effective for improvement of accuracy, and it was found that the optimal mesh size in the neighborhood of round leading edge surface was required.
