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Add a stop criteria for an unsteady multiphase simulation |
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May 18, 2018, 09:22 |
Add a stop criteria for an unsteady multiphase simulation
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Join Date: May 2018
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Dear all
I'm working on a multiphase problem on twoPhaseEulerFoam on an air-water separator. My problem become steady from a moment but i have to make a simulation process whe the piece can change. So i don't know how to stop my simulation on the optimal iteration when she becomes steady. I would like make a stop criteria on the average velocity on a patch if possible. Do i have to use a writeAndEndSwakExpression? (i use OpenFoam 4x and swak4foam is not stable on this version) I saw that we can use that function to look about the delta between the value of a probe at time t and the value of the same probe at time (t-dt). And when this delta become smaller than a fixed value, we can make than simulation stop. This trick is possible on openfoam classic and for a patch instead of an probe? I also tried using the tolerance in fvsolution but i don't understand all specificity. Are all tolerances need to be verify to stop the simulation? I tried to make all tolerance on a big value but that doesn't stop. Thank you very much for your answers and have a good day! Ps: Sorry for my bad english |
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