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ISSN Печать: 1065-3090
ISSN Онлайн: 1940-4336
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THE TRANSIENT FLOW FIELD NUMERICAL ANALYSIS OF VEHICLES INTERSECTION FOR A VARIETY OF TRAVEL SPACING
Краткое описание
Driving safety and comfort have enormous relationship with the flow field surrounding vehicles. Especially, when two cars mutually overtake each other, flow field becomes complicated because the high-speed wind impinging on vehicles will cause disturbance phenomenon. This paper analyzes the flow field of two vehicles overtaking using the Computation Fluid Dynamics (CFD) method and applies dynamic grid technique to solve the unsteady 3D Navier−Stokes equation. This study used three test models for different vehicles spaces to monitor the change in flow field and to analyze related aerodynamic coefficients. The results showed that, when two vehicles spacing is very small, aerodynamic characteristic caused by the large vehicle has a very tremendous influence on the small car. This affects the drivability and control ability of the driver in the small car.