某房车外流场的CFD模拟分析

he numerical simulation of car external airflow field using aerodynamics method has been widely used in the design of car style.In this paper ,numerical analysis of external flow field for a recreational vehicle is used by CFD software. Some informations we obtained are drag coefficients,pressure field distribution and velocity field distribution.From the analysis results, structure of recreational vehicle analysis has three areas which are the main cause for pressure drag. There are two vortices formed at the tail of recreational vehicle having the greatest influence.At least,according to these simulation charts some suggestions are put forward in order to structural improvement.