Numerical Simulation for Nonlinear Interaction between an Attached Air Bubble and Nearby Oscillating Bubble

Abstract

Abstract The numerical simulations of a non-spherical evolution of pulsating bubble interacting with a stationary air bubble attached to a fixed structure were performed by using the three-dimensional boundary integral method which is based on the mirror image method to simplify the processing of the numerical model. Validation of the code is presented by comparison of numerical predictions with laboratory experimental data obtained by our previous research. Complex phenomena are observed such as three kinds of bubble jet forms: upward bubble jet, bubble splitting phenomenon, and downward bubble jet. The present simulations provide insight into the interesting bubble jetting phenomena in detail, including bubble splitting, jet away from the plate, and bubble shedding.