Interaction of Two Vortex Rings Moving along a Common Axis of Symmetry

Abstract

Interaction of two vortex rings is examined by experiments and numerical analysis. Experimental observations are carried out in a water tank using the electrolysis method and it is found that the interaction patterns are classified into three types. Numerical simulations are performed by integrating the Navier-Stokes equation and the results of the experiments and calculations are found in good agreement. The game of the passing through each other does not happen in this region of low Reynolds number.