Numerical Study of the Emission of Acoustic Energy of Single Collapsing Vapor Bubble Near a Rigid Wall

A compressible two-phase solver considering phase transition and thermodynamic effects is developed on OpenFOAM to numerically investigate the dynamics of single cavitation bubble collapse near rigid wall. grid independence analysis conducted, accuracy pressure field verified by comparing numerical results with experimental results. The emission process acoustic energy during discussed. Moreover, radiation in flow under different dimensionless bubble-wall distances ? further studied, which related mechanism erosion. show that ??value has a significant effect amplitude energy. maximum accounts for 8% 25% total when ranges from 0.1 2.0. decreases range 0.1<?<0.9 while increases 0.9<?<2.0.