[sharonyue]

Hi foamers;

I am using pimpleDyMFoam,the mesh was generated by ICEM.I find my result is a little wired.Anyone can help me?I dont know where is going wrong.

first I copy the fluent.msh into /incompressible/pimpleDyMFoam/mixerVessel2DAMI



1,Stationary Mesh.

The image is attached.

2,Rotate mesh.

The image is attached.

3,Merge mesh

I use ICEM to merge mesh,the image is attached.
AMI1 and AMI2 is actually the same.but there are two boundaries.

4,fluentMeshToFoam -writeZones fluent.msh

After this I get the polyMesh.and there are two parts in cellzones dictionary.


5,Change boundary dictionary.

5
(
    AMI1
    {
        type            cyclicAMI;
        nFaces          116;
        startFace       6944;
neighbourPatch  AMI2;
        transform       noOrdering;
    }
    IMPELLER
    {
        type            wall;
        nFaces          116;
        startFace       7060;
    }
    AMI2
    {
        type            cyclicAMI;
        nFaces          156;
        startFace       7176;
neighbourPatch  AMI1;
        transform       noOrdering;
    }
    WALLS
    {
        type            wall;
        nFaces          156;
        startFace       7332;
    }
    frontAndBackPlanes
    {
        type            empty;
        nFaces          7216;
        startFace       7488;
    }
)

6,dynamicMeshDict

dynamicFvMesh   solidBodyMotionFvMesh;

motionSolverLibs ( "libfvMotionSolvers.so" );

solidBodyMotionFvMeshCoeffs
{
    cellZone        ROTATE;

    solidBodyMotionFunction  rotatingMotion;
    rotatingMotionCoeffs
    {
        CofG        (0 0 0);
        radialVelocity (0 0 5000); // deg/s
    }
}

7,p

internalField   uniform 0;

boundaryField
{
    AMI1
    {
        type		cyclicAMI;
	value		$internalField;
    }

    AMI2
    {
       type		cyclicAMI;
	value		$internalField;
    }

    IMPELLER
    {
        type            zeroGradient;
    }

    WALLS
    {
       type            zeroGradient;
    }

   
}

8, U

dimensions      [0 1 -1 0 0 0 0];

internalField   uniform (0 0 0);

boundaryField
{


    AMI1
    {
        type		cyclicAMI;
	value		$internalField;
    }

    AMI2
    {
       type		cyclicAMI;
	value		$internalField;
    }

    IMPELLER
    {
        type            movingWallVelocity; // fixedValue;
        value           uniform (0 0 0);
    }

    WALLS
    {
        type            movingWallVelocity; // fixedValue;
        value           uniform (0 0 0);
    }
}

9,pimpleDyMFoam


the result is here.Looks like the velocity in the stationry mesh and rotate mesh is totally different, in the rotate mesh the velocity is big. in the stationary is small.

Looks like the velocity can not penetrate the AMI boundary.

Anyone know how to handle this?

[sharonyue]

but in interDyMFoam, it looks fine. check it out here:ICEM and AMI unfinished tutorial