[Hr_kules]

Hey everyone, i want to establish an procedure to import a mesh from fluent to openfoam and run an CHTmultiRegionFoam simulation on it.

For the sake of simplicity i am starting with three boxes. One is a solid that is connected to two fluid boxes. The mesh is conforming and was build in fluent.

When i run my current procedure i get zerosized slave baffles. However, for an CHTMultiRegionFoam simulation i reference the heat shell and tube heat exchanger example and want to use baffles and mapped walls.

The procedure looks like following:
fluentmeshtofoam -writeSets
createPatch -overwrite
topoSet -overwrite
createbaffles -overwrite
SplitmeshRegions -cellZones -overwrite

these are my dictionary files:

/*--------------------------------*- C++ -*----------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Version:  9                                     |
|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       dictionary;
    object      createPatchDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

pointSync true;

patches
(
    {
        name interfaceFluidcoldPlate;

        patchInfo
        {
            type wall;
        }

        constructFrom patches;

        patches (fluidcold_to_plate);
    }
    {
        name interfaceFluidhotPlate;

        patchInfo
        {
            type wall;
        }

        constructFrom patches;

        patches (fluidhot_to_plate);
    }
    {
        name interfacePlateFluidcold;

        patchInfo
        {
            type wall;
        }

        constructFrom patches;

        patches (plate_to_fluidcold);
    }
    {
        name interfacePlateFluidhot;

        patchInfo
        {
            type wall;
        }

        constructFrom patches;

        patches (plate_to_fluidhot);
    }   
);

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

topoSet:

/*--------------------------------*- C++ -*----------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Version:  9                                     |
|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       dictionary;
    object      topoSetDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

actions
(
    //- Create solid zone
    {
        name plate;
        type cellZoneSet;
        action new;
        source setToCellZone;
        sourceInfo
        {
            set plate;
        }
    }
    //- Create fluid zone
    {
        name fluidcold;
        type cellZoneSet;
        action new;
        source setToCellZone;
        sourceInfo
        {
            set fluidcold;
        }
    }
    //- Create fluid zone
    {
        name fluidhot;
        type cellZoneSet;
        action new;
        source setToCellZone;
        sourceInfo
        {
            set fluidhot;
        }
    }
   
    {
        name    fluidcold_to_plate;
        type    faceSet;
        action  new;
        source  patchToFace;
        sourceInfo
        {
            name    interfaceFluidcoldPlate;
        }
    }
    {
         name fluidcold_to_plate;
         type faceZoneSet;
         action new;
         source setToFaceZone;
         sourceInfo
         {
            faceSet fluidcold_to_plate;
         }
        
    }
    
    {
        name    fluidhot_to_plate;
        type    faceSet;
        action  new;
        source  patchToFace;
        sourceInfo
        {
            name    interfaceFluidhotPlate;
        }
    }
    
    {
    name fluidhot_to_plate;
    type faceZoneSet;
    action new;
    source setToFaceZone;
    sourceInfo
    {
        faceSet fluidhot_to_plate;
    }
        
    }   
    

    
);

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

createBaffles:

/*--------------------------------*- C++ -*----------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     | Website:  https://openfoam.org
    \\  /    A nd           | Version:  9
     \\/     M anipulation  |
\*---------------------------------------------------------------------------*/
FoamFile
{
    format      ascii;
    class       dictionary;
    object      createBafflesDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

internalFacesOnly false;

baffles
{
    baffles1
    {
        type        faceZone;
        zoneName    fluidhot_to_plate;

        patches
        {
            master
            {
                name        fluidhot_to_plate;
                type        mappedWall;
                sampleMode  nearestPatchFace;
                sampleRegion plate;
                samplePatch plate_to_fluidhot;
            }
            slave
            {
                name        plate_to_fluidhot;
                type        mappedWall;
                sampleMode  nearestPatchFace;
                sampleRegion fluidhot;
                samplePatch fluidhot_to_plate;
            }
        }
    }

    baffles2
    {
        type        faceZone;
        zoneName    fluidcold_to_plate;

        patches
        {
            master
            {
                name        fluidcold_to_plate;
                type        mappedWall;
                sampleMode  nearestPatchFace;
                sampleRegion plate;
                samplePatch plate_to_fluidcold;
            }
            slave
            {
                name        plate_to_fluidcold;
                type        mappedWall;
                sampleMode  nearestPatchFace;
                sampleRegion fluidcold;
                samplePatch fluidcold_to_plate;
            }
        }
    }
}


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

and the resulting boundaries with the empty slave walls:

/*--------------------------------*- C++ -*----------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     | Website:  https://openfoam.org
    \\  /    A nd           | Version:  9
     \\/     M anipulation  |
\*---------------------------------------------------------------------------*/
FoamFile
{
    format      ascii;
    class       polyBoundaryMesh;
    location    "constant/polyMesh";
    object      boundary;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

13
(
    wallfluidhot
    {
        type            wall;
        inGroups        List<word> 1(wall);
        nFaces          3456;
        startFace       165744;
    }
    inlethot
    {
        type            patch;
        nFaces          576;
        startFace       169200;
    }
    outlethot
    {
        type            patch;
        nFaces          576;
        startFace       169776;
    }
    wallplate
    {
        type            wall;
        inGroups        List<word> 1(wall);
        nFaces          288;
        startFace       170352;
    }
    outletcold
    {
        type            patch;
        nFaces          576;
        startFace       170640;
    }
    inletcold
    {
        type            patch;
        nFaces          576;
        startFace       171216;
    }
    wallfluidcold
    {
        type            wall;
        inGroups        List<word> 1(wall);
        nFaces          3456;
        startFace       171792;
    }
    interfacePlateFluidcold
    {
        type            wall;
        inGroups        List<word> 1(wall);
        nFaces          1152;
        startFace       175248;
    }
    interfacePlateFluidhot
    {
        type            wall;
        inGroups        List<word> 1(wall);
        nFaces          1152;
        startFace       176400;
    }
    fluidhot_to_plate
    {
        type            mappedWall;
        inGroups        List<word>
3
(
wall
mappedPatch
baffles1
)
;
        nFaces          1152;
        startFace       177552;
        sampleMode      nearestPatchFace;
        sampleRegion    plate;
        samplePatch     plate_to_fluidhot;
    }
    plate_to_fluidhot
    {
        type            mappedWall;
        inGroups        List<word>
3
(
wall
mappedPatch
baffles1
)
;
        nFaces          0;
        startFace       178704;
        sampleMode      nearestPatchFace;
        sampleRegion    fluidhot;
        samplePatch     fluidhot_to_plate;
    }
    fluidcold_to_plate
    {
        type            mappedWall;
        inGroups        List<word>
3
(
wall
mappedPatch
baffles2
)
;
        nFaces          1152;
        startFace       178704;
        sampleMode      nearestPatchFace;
        sampleRegion    plate;
        samplePatch     plate_to_fluidcold;
    }
    plate_to_fluidcold
    {
        type            mappedWall;
        inGroups        List<word>
3
(
wall
mappedPatch
baffles2
)
;
        nFaces          0;
        startFace       179856;
        sampleMode      nearestPatchFace;
        sampleRegion    fluidcold;
        samplePatch     fluidcold_to_plate;
    }
)

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

i can't find the error i made and any help would be appreciated!