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April 7, 2010, 06:58 |
Wall boundary is ignored when using wedge
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#1 |
New Member
Join Date: Apr 2010
Posts: 2
Rep Power: 0 |
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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February 7, 2011, 07:20 |
same problem
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#2 |
New Member
Join Date: Jul 2010
Posts: 10
Rep Power: 16 |
hello, i have exactly the same problem. Did you already find a solution? Thanks noramat
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