SRP
Ansys Employee

Hi,

With VOF you're fully resolving the bubbles, is your mesh fine enough? Bubbles can be patched into the domain (covered under initialisation). You will need a very good quality and well resolved mesh, small time steps and time.

Since you want to create bubble, You can try Multi VOF.

please check ansys forum disscusion:Simulating bubble formation in water container (ansys.com)

Thank you.