Calculation of the sound generated by the head-on collision of two vortex rings

摘要

The dynamics of the head-on collision of two identical rings vortices is computed using an axisymmetric solution of the vorticity equation on a Lagrangian mesh. The vorticity and velocity distributions determined in this manner are then used to compute the radiated sound produced by this collision. The predicted sound is compared to measurements and the agreement is seen to be excellent.