[Patuco]

Hi, I am trying to make a multiregion mesh with snapyhexmesh in openfoam, the case is air around and a rectangular pipe with a water flow inside.

The problem is that I visualize the mesh and the contour mesh generated by blockmesh cuts my study region, then I modify the blockmesh coordinates but then the mesh generated by snappyhexmesh disappears and I am left only with the contour mesh.

in the log.snappyhexmesh I observe that it does not generate any baffles, but I have put the same conditions as in the shellandtubeheatexchanger tutorial.

Do you know why this could happen?

I am basing it on the shellandtubeheatexchanger CHT multiregion tutorial, it is openfoam12.


createbaffles

internalFacesOnly true;

baffles
{
baffles1
{
type faceZone;
zoneName shell_to_solid;

owner
{
name shell_to_solid;
type mappedWall;
neighbourRegion solid;
neighbourPatch solid_to_shell;
}

neighbour
{
name solid_to_shell;
type mappedWall;
neighbourRegion shell;
neighbourPatch shell_to_solid;
}
}

baffles2
{
type faceZone;
zoneName air_to_solid;

owner
{
name air_to_solid;
type mappedWall;
neighbourRegion solid;
neighbourPatch solid_to_air;
}

neighbour
{
name solid_to_air;
type mappedWall;
neighbourRegion air;
neighbourPatch air_to_solid;
}
}
}




snappyhexmeshdict



#includeEtc "caseDicts/mesh/generation/snappyHexMeshDict.cfg"

castellatedMesh on;
snap on;
addLayers off;

geometry
{
shell
{
type triSurfaceMesh;
file "shell.stl";
regions
{
inlet_s { name inlet_s; }
outlet_s { name outlet_s; }
}
}
air
{
type triSurfaceMesh;
file "air.stl";
regions
{
inlet_a { name inlet_a; }
outlet_a { name outlet_a; }
down { name down; }
top { name top; }
laterales { name laterales; }
}
}
solid
{
type triSurfaceMesh;
file "solid.stl";
regions
{
external { name external; }

}
}

shell_to_solid
{
type triSurfaceMesh;
file "shell_to_solid.stl";
}
air_to_solid
{
type triSurfaceMesh;
file "air_to_solid.stl";
}
};

castellatedMeshControls
{
features
(
);

refinementSurfaces
{
shell
{
level (1 1);

regions
{
inlet_s { level (1 1); patchInfo { type patch; } }
outlet_s { level (1 1); patchInfo { type patch; } }

}
}
air
{
level (1 1);
regions
{
inlet_a { level (1 1); patchInfo { type patch; } }
outlet_a { level (1 1); patchInfo { type patch; } }

}
}
solid
{
level (1 1);
regions
{
external { level (1 1); patchInfo { type wall; } }

}
}

shell_to_solid
{
level (1 1);
faceZone shell_to_solid;
cellZone shell;
mode inside;
}
air_to_solid
{
level (1 1);
faceZone air_to_solid;
cellZone air;
mode inside;
}
}

insidePoint (0 0.008 0.015);

nCellsBetweenLevels 2;

resolveFeatureAngle 15;
}

snapControls
{
implicitFeatureSnap true;
}

addLayersControls
{
layers
{

shell_to_solid
{
nSurfaceLayers 2;
mergeFaces false;
}
air_to_solid
{
nSurfaceLayers 2;
mergeFaces false;
}
}

relativeSizes true;
expansionRatio 1.2;
finalLayerThickness 0.5;
minThickness 1e-3;
}

mergeTolerance 1e-6;

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