I'm running a big CFD problem for gas storage in caverns. Now when I set the final simulation time to 20 days or less, it converges. If I increase final time to 21 days or more I get the message: Failed to find consistent initial values. Last time step is not converged.
It's weird since the only thing I changed was final time, anyone familiar with this?
Thanks
https://www.sciencedirect.com/search?qs=COMSOL%20convergence%20problem&show=25&sortBy=relevance
Hi Murad,
you should set the initial time step manually. Comsol calculates the time step automaticall based on different criteria and variables. One of the variables is the time. By increasing the simulation time you indirectly increase the initial time step calculated by the solver and hence get this error ;).
I hope this helps!
Best regards,
Antoni Artinov
There time step formula which is related to mesh size. Please check that carefully and calculate, i think it will solve your problem.
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