Region-wise decomposition
 

Dear Foamers,

I have a case with 200,000 particles concentrated on a very small portion of my domain. Decomposing the case with usual types causes 80% of the particles to locate on a single processor, leading to very slow solution, even though I am using 128 cores. Therefore, I need to use manual decomposition. After studying some posts here, I noticed decomposePar -cellDist command gives a column of processor numbers assigned to each cell. Since I have around 5 million cells, I do not know how to use this tool. Is there any example showing this for a large mesh?