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pisoFoam, localEuler

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Old   April 27, 2023, 08:57
Default pisoFoam, localEuler
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I am trying to obtain a steady state solution of a turbulent case (k-omegaSST). In order to start the simulation with a decent solution, previously to my SS attemps, I run a transient simulation for a quite long time. Then I started my SS solution:

I tried simpleFoam but the simulation crashes at the second step.

Then I tried pisoFoam with localEuler but I get the following error:


Courant Number mean: 0.0248068 max: 0.582525
[0] --> FOAM FATAL ERROR: (openfoam-2212)
failed lookup of rDeltaT (objectRegistry region0) available objects of type volScalarField:
6(nut yWall k nu p omega)
[0]     From const Type& Foam::objectRegistry::lookupObject(const Foam::word&, bool) const [with Type = Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh>]  

[0]     in file /usr/src/packages/BUILD/src/OpenFOAM/lnInclude/objectRegistryTemplates.C at line 571. 

FOAM parallel run exiting

Can somebody explain me how to provide rDeltaT?
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Old   April 28, 2023, 08:02
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Tobermory will become famous soon enough
Try use pimpleFoam instead of pisoFoam ... pisoFoam is for time accurate transient simulations. If your simpleFoam run is crashing on iter 2, then you either need a better starting guess and/or you need to underrelax more.
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steady state simulations

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