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mixerVesselAMI2D, propeller -- fvSolution file doubts

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Old   September 16, 2015, 10:52
Default mixerVesselAMI2D, propeller -- fvSolution file doubts
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Sravan Kumar
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Hi

I am new to openFoam and presently working to simulate the centrifugal pump in a transient way as in mixervesselAMI2D, propeller.

However I have some doubts regarding settings in mixervessleAMI2D, propeller fvSolutions file.

Following are my questions

1) What is cellMotionUx specifed ? What is it purpose and why is it defined only for Ux and not for Uy ??

Code:
cellMotionUx
    {
        solver          PCG;
        preconditioner  DIC;
        tolerance       1e-08;
        relTol          0;
    }
2) What is the purpose of correctPhi in PIMPLE settings ?? when should it be used. Also the use of pRefCell and pRefValue ?? When do you need to specify them ?

Code:
PIMPLE
{
    correctPhi          yes;
    nOuterCorrectors    2;
    nCorrectors         1;
    nNonOrthogonalCorrectors 0;

    pRefCell            0;
    pRefValue           0;
}
3) What is cache ? when it should be used ?

Code:
cache
{
    grad(U);
}
4) By default pressure is solved using GAMG solver which is a multigrid solver. Can we replace it with some PCG solver ( given in userguide ). Or is it like we have to use GAMG only with pimpleDyMFoam.

Please give me some information so that make a fvSolutions file for my simulation.

Any suggestions or information would be helpful.

Thanks in Advance
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Old   September 25, 2015, 15:58
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Sravan Kumar
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Any help guys ??????
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Old   February 5, 2018, 08:07
Default mixer
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Przemek Nosal
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Hi,

did you run the mixerVesselAMI2D?? Could you send me the commands?
Thanks Przemek
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