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Automatic Cell Patching in ANSYS/Fluent

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Old   October 23, 2021, 11:44
Question Automatic Cell Patching in ANSYS/Fluent
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Plamen
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Hello,

I have a question about patching selected cells during a simulation.
I am doing a transient two-phase flow through a nozzle (VOF, ReStress) and during the simulation the pressure slowly creeps up to a very high and unrealistic values in only specific cells at few very sharp edges. Because of that at some point (well into the simulation) the solution diverges. I was thinking to go and manually mark the cells where those high pressure values are and patch them with the max pressure at the inlet (68atm) so I can continue with the simulation.

My question is how to make this patching process automatic. In other words, every several time steps Fluent to check if pressure is exceeding a specific values and if it does, to bring those values back to the maximum. This way I would force the pressure not to exceed the specified maximum and prevent the solution from diverging.

I know that fixing the mesh would be the ultimate solution but lets say I can not fix the mesh. How can I do the above?
Any help would be greatly appreciated.

Thanks a lot.
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