[LongCao]

Hi everybody, I hope that you are doing well.

I am developing a two-phase solver with the CLSVOF method, my CLSVOF validation cases run well. However, there are some errors when I tried combining the method with an N-S solver. I run a static drop simulation to test the interface jump condition, but as you can see in the attached images, the result became unstable. The first photo is from timestep 3, and the second one is from timestep 4. After that, the pressure value became larger and larger, finally got NaN. I use the CSF method to consider surface tension force.

Have you ever encountered the problem and do you have any idea why the problem occurs? Thank you all for reading!!!