[joshmccraney]

Hi All!

I am using OpenFOAM 6.0. Liquid flows axially through a vaned cylinder (see attached rendition). I would like to employ a symmetry condition about the vane-center, where the vane partially lies on the (0 4 7 3) plane. By applying the condition "symmetry" on this plane, will OpenFOAM recognize the plane is part liquid and part solid, or will it believe it is the symmetry plane? The geometry I made in SHM has a cut for the vane.

My blockMeshDict is below.

/*--------------------------------*- C++ -*----------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Version:  4.0                                   |
|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       dictionary;
    object      blockMeshDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

convertToMeters 0.001;

xmin 0;
xmax 15;
ymin -2;
ymax 30;
zmin 0;
zmax 160;

xcells 20;
ycells 40;
zcells 200;

vertices
(
    ($xmin $ymin $zmin)
    ($xmax $ymin $zmin)
    ($xmax $ymax $zmin)
    ($xmin $ymax $zmin)
    ($xmin $ymin $zmax)
    ($xmax $ymin $zmax)
    ($xmax $ymax $zmax)
    ($xmin $ymax $zmax)
);

blocks
(
    hex (0 1 2 3 4 5 6 7) ($xcells $ycells $zcells) simpleGrading (1 1 1)
);

edges
(
);

boundary
(
    tank	
    {
        type patch;
        faces
        (
            (2 6 5 1)
            (0 3 2 1)
	    (4 5 6 7)
        );
    }
    lid	
    {
        type patch;
        faces
        (
            (3 7 6 2)
        );
    }
    outlet	
    {
        type patch;
        faces
        (
            (1 5 4 0)
        );
    }
    symm_side		
    {
        type symmetry;
        faces
        (
            (0 4 7 3)
        );
    }
);

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

After meshing, the boundary file reads two symm_side lines, which I'm unsure how to deal with (I believe related to the vane)

/*--------------------------------*- C++ -*----------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     | Website:  https://openfoam.org
    \\  /    A nd           | Version:  6
     \\/     M anipulation  |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       polyBoundaryMesh;
    location    "constant/polyMesh";
    object      boundary;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

5
(
    symm_side
    {
        type            symmetry;
        inGroups        1(symmetry);
        nFaces          20;
        startFace       503867;
    }
    tank
    {
        type            wall;
        inGroups        1(wall);
        nFaces          45612;
        startFace       503887;
    }
    outlet
    {
        type            wall;
        inGroups        1(wall);
        nFaces          34;
        startFace       549499;
    }
    lid
    {
        type            wall;
        inGroups        1(wall);
        nFaces          30;
        startFace       549533;
    }
    symm_side
    {
        type            wall;
        inGroups        1(wall);
        nFaces          13409;
        startFace       549563;
    }
)

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