[rachele]

Hellow everyone!

I am currently working on a multiregion simulation to study the heat transfer between different region wiht solver chtMultiRegionFoam. Inside my domain I have both interfaces between solid and fluid regions but also between two solids. Currently I am imposing at each interface between regions the boundary condition for temperature :

solid1_to_solid2
{
type compressible::turbulentTemperatureCoupledBaffleMix ed;
value $internalField;
Tnbr T;
}

Unfortunately with this condition I am not able to correctly solve the problem and for even very simple meshes, If I simulate the interaction between solid regions after some iterations I get a negative T. More over before the negative T, the temperature fields between region is not consistent with my input.

I think that it could be a problem with this boundary condition. Does anyone have solved conduction between solids with chtMultiRegion with another BC?

[peterhess]

Hello!

kappaMethod could be missing.

type compressible::turbulentTemperatureCoupledBaffleMix ed;
Tnbr T;
kappaMethod solidThermo;
value $internalField;

Be also sure, that in constant\regionsProberties all the solid regions are defined as solid.

Tutorial heatedDuct is a good example and it includs solid to solid interface.

Take the solver setups from this tutorial.