Numerical study of the solid walls effect on the velocity of a liquid jet formed as the result of vapor bubble collapse near a rod

The paper presents the results of numerical simulations of the vapor bubble collapse near the end face of a thin laser waveguide immersed in a cold liquid. The effect of solid walls located near the waveguide on the dynamics of the flow field and the velocity of the jet formed as a result of bubble collapse is studied. It is shown that the average jet velocity significantly depends on the configuration of the walls and can either increase, compared to the case when there are no walls, or decrease, down to zero.