Hydrodynamics of jet impact in a collapsing bubble

An improved and highly accurate boundary integral scheme is employed to calculate the necessarily non-spherical motion of bubbles near both rigid and free boundaries (which are examined singly and combined to provide a shallow layer of fluid): where suitable examples exist, bubble shapes are compared against experiments. With regard to several physical phenomena, the motion of bubbles generated at different start times is also examined. Physical quantities such as pressure and velocity fields around the bubble, energies associated with the bubble motion, and the kinetic energy and Kelvin impulse of the liquid jet are examined to provide insight into the physics of the problem.