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This is my gemoetry, I am setting all boundaries as walls except the liquid level whitch is defined as symmetryPlane. For 0:
p_rgh: fixedFluxPressure ($internaField)
U: fixedValue ($internalField)
T: fixedValue ($internalField)
alpha: zerogradient

Quote:

Originally Posted by foamiste (Post 604263)

Ok. I'm sorry I'm out of easy ideas since I'm not very expert about MRF and stirred vessels. Hope someone could help more! :(

similar probelem

hello guys, I have also asked this question on reddit and openfoam google group

I kinda have a same issue as the OP so I post here too.
I'm following this tutorial for compressible fluid. except my geometry is little bit different:
https://www.cfd-online.com/Forums/at...1&d=1516886274

But when I try to solve it with sonicFoam I get the error below:

Code:



Time = 0.002



Courant Number mean: 62.7429 max: 120

diagonal:  Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0

PIMPLE: iteration 1

smoothSolver:  Solving for Ux, Initial residual = 0.738285, Final residual = 0.357953, No Iterations 1000

smoothSolver:  Solving for Uy, Initial residual = 0.0131426, Final residual = 4.93472e-018, No Iterations 1

smoothSolver:  Solving for e, Initial residual = 1, Final residual = nan, No Iterations 1000

smoothSolver:  Solving for p, Initial residual = nan, Final residual = nan, No Iterations 1000

diagonal:  Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0

time step continuity errors : sum local = nan, global = nan, cumulative = nan

PIMPLE: iteration 2

smoothSolver:  Solving for Ux, Initial residual = nan, Final residual = nan, No Iterations 1000

smoothSolver:  Solving for Uy, Initial residual = nan, Final residual = nan, No Iterations 1000

smoothSolver:  Solving for e, Initial residual = nan, Final residual = nan, No Iterations 1000





--> FOAM FATAL IO ERROR:

wrong token type - expected Scalar, found on line 0 the word 'nan'



file: C:/Users/.../20180124/system/data.solverPerformance.e at line 0.



    From function Foam::Istream& Foam::operator>>(Foam::Istream&, Foam::doubleScalar&)

    in file lnInclude/Scalar.C at line 93.



FOAM exiting

I would appreciate if you could help me know what is the problem and how I can solve it

Quote:

Originally Posted by foadsf (Post 679352)

Code:



Time = 0.002



Courant Number mean: 62.7429 max: 120

diagonal:  Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0

PIMPLE: iteration 1

smoothSolver:  Solving for Ux, Initial residual = 0.738285, Final residual = 0.357953, No Iterations 1000

smoothSolver:  Solving for Uy, Initial residual = 0.0131426, Final residual = 4.93472e-018, No Iterations 1

smoothSolver:  Solving for e, Initial residual = 1, Final residual = nan, No Iterations 1000

smoothSolver:  Solving for p, Initial residual = nan, Final residual = nan, No Iterations 1000

diagonal:  Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0

time step continuity errors : sum local = nan, global = nan, cumulative = nan

PIMPLE: iteration 2

smoothSolver:  Solving for Ux, Initial residual = nan, Final residual = nan, No Iterations 1000

smoothSolver:  Solving for Uy, Initial residual = nan, Final residual = nan, No Iterations 1000

smoothSolver:  Solving for e, Initial residual = nan, Final residual = nan, No Iterations 1000





--> FOAM FATAL IO ERROR:

wrong token type - expected Scalar, found on line 0 the word 'nan'



file: C:/Users/.../20180124/system/data.solverPerformance.e at line 0.



    From function Foam::Istream& Foam::operator>>(Foam::Istream&, Foam::doubleScalar&)

    in file lnInclude/Scalar.C at line 93.



FOAM exiting

I would appreciate if you could help me know what is the problem and how I can solve it

I'm sorry, I'm not very familiar with the sonicFoam solver. When NaN are generated it generally it means that something is going deeply wrong.

What I did not get at the beginning is that both of you are using a Windows version of OpenFOAM. Did you try on Linux? Or maybe use a docker image.

I solved the issue and you may see more info here in the OpenFOAM google group. There was actually nothing wrong with my code/model. it was just the model not converging due to the a very high input velocity. At least this was my issue. I'm not sure about the OP though!

Quote:

Originally Posted by foadsf (Post 679402)

Always check BCs... :)

Quote:

Originally Posted by tidusuper91 (Post 679406)

Always check BCs... :)

sure. novice here :)