[KlasJ]

Hi everyone,

I am trying to implement a multiphysics solver for nuclear engineering purposes. In short my application will solve for the neutron flux and fluid properties in a cell containing fuel (solid) and water (liquid).

I have used 1.6-ext in order to get coupledFvScalarMatrix for the neutron flux (which is solved for both the fuel and the water simultaneously). The velocity and pressure is solved separately (using equations from buoyantSimpleFoam).

My idea was to solve the energy equation using a temperature equation in the solid and an enthalpy equation in the fluid. This makes it difficult to use regionCoupling (solving for two different quantities). However, the fields are coupled and I therefore want to use solidWallMixedTemperatureCoupled boundary condition.

The problem is that the specified boundary can not be of both the type regionCouple and directMappedWall. I can not figure out a way to combine these two.

Anyone having an idea?

Thanks,

Klas