Data for Numerical simulation of a confined cavitating gas bubble driven by ultrasound

Plots of the spatio-temporal evolution of the shear flow (that is difficult to measure experimentally) reveal peak shear-stress magnitudes at collapse that are double those reported for an undriven laser-induced bubble in similar geometric confinement. This twofold increase is attributed to the ultrasonic signal driving the collapse. Surprisingly, in our simulations we have not encountered a transferred-jet regime previously observed for an unforced bubble collapsing in a similar configuration.

This unexpected finding highlights the different physics involved in modelling acoustically-driven bubbles compared to the conventional laser-induced bubbles used in experiments.<br><br>The DATA folder contains the dataset supporting the key findings of the above numerical study. The volume-of-fluid (VOF) simulation data provided can be reproduced using the native solver compressibleInterFoam available within any standard OpenFOAM installation.

To aid the simulation setup, OpenFOAM specific terminology (e.g. for typical boundary conditions) has been provided in the journal article whenever possible. The results of this study were obtained using OpenFOAM 5 (openfoam.org/version/5-0/). Please refer to cfd.direct/openfoam/user-guide-v5/ for the User Guide.

Please refer to OpenFOAM's Programmer's Guide for tensor algebra.