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Final result changes if simulation is interrupted and restarted

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Old   August 16, 2021, 07:34
Default Final result changes if simulation is interrupted and restarted
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Hi everyone, I am dealing with a nonNewtonian laminar flow that I solve through a customized Pimple solver (as more equation are required). I have recently noticed that if I stop the simulation and then I restart from the latest time step the results will considerably change with respect to the ones obtained not stopping the simulation.

I am stopping the simulation in a forced way (I know it is not optimal, but I always make sure through the log that the "latest" folder has been written completely). After that, when I restart from "latestTime" everything starts changing, reaching after a couple of seconds a completely different state.

I am using the adaptive time step, but after I restart, the time step value is the same of the unarrested one.

Do you have any suggestion about this? Did it ever occur to you?
rol97 is offline   Reply With Quote


restart problem, results variation

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