Numerical study of unsteady features of airflow around the Ahmed body

The airflow around the Ahmed body with 30? slant angle has been simulated using LES. By statistically analyzing the computational results including drag force, lift force and 3D velocity, consulting the data belong to published reference; the computational method has been validated. The key conclusion is that with 0? yawing angle, the unsteady parameters of airflow around Ahmed body with symmetry geometry are not absolutely symmetrical.