Numerical study of a vortex ring impacting on a circular cylinder

【Author】

Heng Ren;Xiyun Lu;

【Abstract】

<正>The interaction of a vortex ring with a circular cylinder at Re = 3 000 in three dimensions is investigated using large eddy simulation (LES).We present the effects of vortex ring radius on the evolution of the vortex structure and find three typical evolution processes of the secondary vortex.Firstly,a secondary vortex separates and lifts up from the surface of cylinder,and then its

【Keywords】

ring;Numerical study of a vortex ring impacting on a circular cylinder;

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