| Wedge |
April 7, 2010 05:58 |
Wall boundary is ignored when using wedge
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;
}
}
// ************************************************************************* //
http://img90.imageshack.us/img90/9628/nozzlecase.jpg
|
