Effects of charge mass and water depth on dynamic behaviors of an underwater explosion bubble

The volume-acceleration model was introduced to determine the initial conditions for the motion of an underwater explosion bubble. A subcode written in Fortran language was developed to define the initial and boundary conditions for the fluid field. By combining the finite element analysis software MSC.Dytran and the self-developed subcode, the dynamic behaviors of the bubble were simulated including oscillation, collapse, jet and so on. The computational volume-time curves of the bubble in this paper are more consistent with the experimental results than those by the boundary integral method. The dynamic characteristics of the bubble, which consist of volume, maximal radius, period, jet velocity, and so on, have close relations with the charge mass and water depth. The obtained curves are helpful for the correlative theory research and engineering calculation.