I am doing air-water VOF simulation with pressure and velocity fields initialized from well converged single phase solution. After few iterations star-ccm throws a message in output window saying "breaking out of time step. Time solution is in an inconsistent state". But it comes out of the time-step only after finishing all inner iterations. Why does it occur and what is the importance of this warning? Is there a way to handle this?
Thank you
I do not know Star CCM+ very well. But if you initialize velocity and pressure fields from a single phase flow calculation for a VOF simulation of at least two fluids of different density, than your pressure field is at least inconsistent with respect to the hydrodynamic pressure in your fluid(s). In dependence on how your configuration looks like, this can cause divergence right away... I could imagine, that CCM+ might claim about this. But not sure.
Regards, Th. Frank.
Dear Mr. Thomas Frank ,
Thanks for your briefing. In my case, I see this message not more than twice or thrice in 10000 iterations. As of now my iteration count is past 100k and no divergence is observed so far.
Than this message is most likely of another origin. If the CCM+ manual does not provide any clue about this error message, than a true CCM+ wizzard is required to decode this message, I guess.
- Badges
- Science topic
- Similar topics
- Force