Numerical Study on Bubble Motion near the Wall

The volume-acceleration model was introduced to determine the initial condition for bubble motion of underwater explosion. From the basic phenomenon of the interaction between bubble and rigid wall, the dynamic behavior of bubble near wall, including ring rebound of bubble and jet flow, was simulated and analyzed using MSC.DYTRAN finite element analysis software with developed subroutine defining the initial value and boundary condition of fluid field. The computational result of the behavior of bubble was compared with the experimental result. The comparison of results show that the former is consistent with the latter. The dynamic behavior of bubble near rigid wall and velocity of jet flow were studied systematically. It is summarized that the dynamic behavior near bottom rigid wall is close relevant to depth and distance. The research is of value to relevant theory modelings and engineering calculations.