[Mitomi]

Dear all,

I use OpenFOAM-V2212 version because of its flexibility in mesh processing.
I'm trying to do transient simulation using the chtMultiRegionFoam solver.

I tried adding the residualControl keyword to the fvSolution to do a convergence check for the PIMPLE loop when running the solver.
However, the residualControl did not work effectively after running the solver.

It seems that the pimpleControl class is not implemented to work with the chtMultiRegionFoam solver.

So, I want to extend the pimpleControl class so that the residualControl works with the chtMultiRegionFoam solver.
But, since I'm a beginner to OpenFOAM, I'm wondering how to extend the source code of the pimpleControl class.

Any ideas to make the pimpleControl class multi-regional help me.

I would appreciate it if anyone could help me.