[chaz]

Hello,
I am modeling heat transfer in solids using chtmultiregionfoam. I have solid regions in contact, and would like to have thermal contact resistances between them. Due to the nature of the geometry, the patches in contact are non-conformal. I am using ESI openfoam 23.


Ideal contact seems to work fine, with a mapped mesh with AMI:
boundary example:

    v1ToV2
    {
        //type            mappedWall;
        type            mappedPatch;
        //sampleMode      nearestPatchFace;
        sampleMode      nearestPatchFaceAMI;
        sampleRegion    v2;
        samplePatch     v2ToV1;
    }

T field

   
    v1ToV2
        {
            
    
            // for perfect contact
            type            compressible::turbulentTemperatureCoupledBaffleMixed;
            Tnbr            T;
            //kappa           solidThermo;
            kappaMethod     solidThermo;
            kappaName       none;
            value           uniform 300;

If I then switch and try to make it a thermal contact resistance, the thermal contact is ignored, and there is still ideal contact between the patches:

    // for contact resistance
            type            compressible::turbulentTemperatureCoupledBaffleMixed;
                value           uniform 300;
                Tnbr            T;
            kappaMethod     solidThermo;
            thicknessLayers ( 0.001 );
            kappaLayers     ( 1.5 );

Reading about this here and on ESI's site, etc, it is not clear if this is supported or not (for non-conformal meshes).
How do I model thermal contact resistance between two non-conformal patches in chtmultiregionfoam?

[chaz]

As an update, I went ahead and switched to fully conformal meshes for all regions. This is due to the challenges getting contact resistance to work, and what appears to be some error when using non-conformal meshes between solid regions.