Reply To: Artificial high velocities at the interface, using VOF

[jcooper]

Hi:

Since the artefacts you are describing coincide with the air/water interface (where the mesh adaption also acts), I suspect that the mesh adaption is causing the high velocities. I have seen similar things happen in my own calculations.

I would consider making a mesh that already has refinement where it will be needed throughout the calculation.  You will gain back the time that is lost while the solution recovers from the adaptions, and there will be less chance of losing (or creating) momentum/energy/mass as the solution is transferred during the refinement process.

Best Regards,

Judy