Wall function specification in Turbulent Heat Transfer Calculation

:hugs:Hello everyone, I’ve recently been using OpenFOAM adapters to solve a conjugate heat transfer problem in fuel rods. The model is divided into three regions: the fuel core, cladding, and water, each computed using LaplacianFoam, LaplacianFoam, and BuoyantSimpleFoam respectively. Following the heat exchanger tutorial, I set the interface type to mapped. However, my case requires enabling a turbulence model, which resulted in the error: “Invalid wall function specification.Patch type for patch water_inner must be wall,Current patch type is genericPatch”

How can I resolve this? Previously, when I set the water-cladding interface type to wall, I observed minimal heating in the water domain.

Hi @zdc,

with a first guess, I think that this is an issue with configuring the OpenFOAM simulation itself (wall functions), not with the coupling.

However, even if you manage to configure wall functions, I don’t know if the adapter will do the right thing. We do have a very old issue with wall functions in CHT: CHT: Calculation of HeatFlux for meshes which use wall functions · Issue #10 · precice/openfoam-adapter · GitHub