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Wall boundary is ignored when using wedge

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Old   April 7, 2010, 05:58
Default Wall boundary is ignored when using wedge
  #1
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Join Date: Apr 2010
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Hi,

I have build a nozzle using the wedge method.
It also looks like it is supposed to.
But when I run the case and view it in paraview it looks like the wall boundary gets ignored.
I am not sure if it is a visualization problem or if also openfoam ignores it. It seems to happen everytime I use wedge for creating cases.
If I use a tinier grid at the wall the velocity goes down but it doesn reach zero.
Maybe someone of you knows this situation and can help.problem
Code:
/*--------------------------------*- C++ -*----------------------------------*\ 
| =========                 |                                                 | 
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           | 
|  \\    /   O peration     | Version:  1.5                                   | 
|   \\  /    A nd           | Web:      http://www.OpenFOAM.org               | 
|    \\/     M anipulation  |                                                 | 
\*---------------------------------------------------------------------------*/ 
FoamFile 
{ 
    version     2.0; 
    format      ascii; 
    class       dictionary; 
    object      blockMeshDict; 
} 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 
 
convertToMeters 0.001; 
 
vertices 
( 
    ( -200.00   299.71    13.09) //  0 inlet top 1 
    ( -200.00   299.71   -13.09) //  1 inlet top 2 
    ( -200.00     0.00     0.00) //  2 tip 
    (    0.00   299.71    13.09) //  3 nozzle inlet top 1 
    (    0.00   299.71   -13.09) //  4 nozzle inlet top 2 
    (    0.00     0.00     0.00) //  5 tip 
    (  660.00    94.91     4.14) //  6 nozzle outlet top 1 
    (  660.00    94.91    -4.14) //  7 nozzle outlet top 2 
    (  660.00     0.00     0.00) //  8 tip 
    ( 1000.00    94.91     4.14) //  9 outlet top 1 
    ( 1000.00    94.91    -4.14) // 10 outlet top 2 
    ( 1000.00     0.00     0.00) // 11 tip 
); 
 
edges 
( 
 
); 
 
blocks           
( 
    //before nozzle 
    hex (2 5 4 1 2 5 3 0) (15 20 1) simpleGrading (1 0.1 1) 
    //nozzle 
    hex (5 8 7 4 5 8 6 3) (73 20 1) simpleGrading (0.3333 0.1 1) 
    //after nozzle 
    hex (8 11 10 7 8 11 9 6) (70 20 1) simpleGrading (1 0.1 1) 
); 
 
patches 
( 
    wall SURF_WALL 
    ( 
        (0 3 4 1) 
        (3 6 7 4) 
        (6 9 10 7) 
    ) 
    symmetryPlane AXIS  
    ( 
        (2 5 5 2) 
        (5 8 8 5) 
        (8 11 11 8) 
    ) 
    patch SURF_INFLOW 
    ( 
        (2 2 1 0) 
    ) 
    patch SURF_OUTFLOW 
    ( 
        (11 11 9 10) 
    ) 
    wedge SURF_BACK 
    ( 
        (2 1 4 5) 
        (5 4 7 8) 
        (8 7 10 11) 
    ) 
    wedge SURF_FRONT 
    ( 
        (2 5 3 0) 
        (5 8 6 3) 
        (8 11 9 6) 
    ) 
); 
 
mergePatchPairs 
( 
); 
 
// ************************************************************************* //
Code:
/*--------------------------------*- C++ -*----------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Version:  1.6                                   |
|   \\  /    A nd           | Web:      http://www.OpenFOAM.org               |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       volVectorField;
    object      U;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

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

internalField   uniform (0 0 0);

boundaryField
{
    SURF_INFLOW
    {
        type            fixedValue;
        value           uniform (50 0 0);
    }

    SURF_OUTFLOW
    {
    type        zeroGradient;
    }

    SURF_WALL
    {
        type            fixedValue;
        value           uniform (0 0 0);
    }

    SURF_FRONT
    {
        type            wedge;
    }

    SURF_BACK
    {
        type            wedge;
    }

    AXIS
    {
        type            symmetryPlane;
    }
}

// ************************************************************************* //
Code:
/*--------------------------------*- C++ -*----------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Version:  1.6                                   |
|   \\  /    A nd           | Web:      http://www.OpenFOAM.org               |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       volScalarField;
    object      p;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

dimensions      [0 2 -2 0 0 0 0];

internalField   uniform 0;

boundaryField
{
    SURF_INFLOW
    {
        type            zeroGradient;
    }

    SURF_OUTFLOW
    {
        type            fixedValue;
        value           uniform 0;
    }

    SURF_WALL
    {
        type            zeroGradient;
    }

    SURF_FRONT
    {
        type            wedge;
    }

    SURF_BACK
    {
        type            wedge;
    }

    AXIS
    {
        type            symmetryPlane;
    }
}

// ************************************************************************* //




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Old   February 7, 2011, 07:20
Default same problem
  #2
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Join Date: Jul 2010
Posts: 10
Rep Power: 7
noramat is on a distinguished road
hello, i have exactly the same problem. Did you already find a solution? Thanks noramat
noramat is offline   Reply With Quote

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