Parallelization of multi-region case
 

Hi Guys,

I'm running conjugate heat transfer simulations with chtMultiRegionFoam on OpenFOAM v6. Because some of my regions are very small (1e3 cells) compared to others (1e6 cells), I am thinking about using different levels of decomposition for each region.

Example:
Case with Regions 1 to 6 is decomposed in 8 subdomains. I want Region 5 to consist of only 2 subdomains instead of 8.

I tried using a different "numberOfSubdomains" for the region but while decomposePar runs fine, the solver complains about a missing "points"-File for region 5 in processors 2 - 7. They don't exist becuase, as defined, region 5 was only decomposed to processors 0 and 1.

What I'm trying to achieve seems to be possible in OF v1712 according to this link: https://www.openfoam.com/releases/op...2/parallel.php
Can anyone help me figure out if it can be done in OF v6 / v7 ?


Best wishes