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Moving Mesh - Difference between fixedValue and movingWalVelocity

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Old   January 21, 2015, 11:53
Default Moving Mesh - Difference between fixedValue and movingWalVelocity
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Björn N.
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Hi together!

in my case, I am using the dynamicMeshDict as follows:

Code:
/*--------------------------------*- C++ -*----------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Version:  2.3.0                                 |
|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       dictionary;
    location    "constant";
    object      dynamicMeshDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

dynamicFvMesh   solidBodyMotionFvMesh;

motionSolverLibs ( "libfvMotionSolvers.so" );

solidBodyMotionFvMeshCoeffs
{
    cellZone        c0Zone; //


    solidBodyMotionFunction  rotatingMotion;
    rotatingMotionCoeffs
    {
        origin      (0 0 0);
        axis        (0 0 1);
        omega       158; //
    }
}


// ************************************************************************* //
inside of the rotated zone is a hole, that should represent a 2-d-cylinder.
The cylinder should neither move nor rotate. Now I wonder how I can get the zero velocity at the wall of the cylinder, whereas the mesh is rotating.

I know there are these types for the bc's :

- fixedValue
- movingWallVelocity
- rotatingWallVelocity

But I am not sure which one to use for the wall patches, or what the difference is...
Can someone help me with that?


Thanks a lot in advance!


Björn
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fixedvalue, movingmesh, movingwallvelocity

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