DecomposePar: assign patch to processor

Dozer_94 · July 25, 2019, 12:44

Hi all,

I would like to know how to set up decomposeParDict in such a way that cells adjacent to a patch (i.e. owners of the patch faces) are all assigned to one processor. Consider this:

patch0
patch1
patch2
patch3

processor0: patch0, patch1
processor1: patch2, patch3

Thanks in advance,

Carlo_P · July 31, 2019, 07:22

Hey,
if you want, you can take a look into the DecomposeParDict file here:
https://github.com/OpenFOAM/OpenFOAM...composeParDict

I think that in your case, you have to put the patch in preservePatches.

If the geometry is simple (such as a pipe), you can enforce the division in geoemtrical divisions using

method simple;

simpleCoeffs{ n (divisionInXDirection divisionInYDirection divisionInZDirection); delta 0.001; }
I would like to suggest to use the more coplex command only if you are very familiar with parallel computation. In the 99% the scoth method gives very good results

July 25, 2019, 12:44	DecomposePar: assign patch to processor	#1
Dozer_94 New Member Join Date: Dec 2016 Posts: 24 Rep Power: 9	Hi all, I would like to know how to set up decomposeParDict in such a way that cells adjacent to a patch (i.e. owners of the patch faces) are all assigned to one processor. Consider this: patch0 patch1 patch2 patch3 processor0: patch0, patch1 processor1: patch2, patch3 Thanks in advance,

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
decomposePar problem: Cell 0contains face labels out of range	vaina74	OpenFOAM Pre-Processing	37	July 20, 2020 06:38
[Other] dynamicTopoFVMesh and pointDisplacement	RandomUser	OpenFOAM Meshing & Mesh Conversion	6	April 26, 2018 08:30
decomposePar 4-core warning/error?	Boloar	OpenFOAM Bugs	23	April 8, 2014 09:57
Possible Bug in pimpleFoam (or createPatch) (or fluent3DMeshToFoam)	cfdonline2mohsen	OpenFOAM	3	October 21, 2013 10:28
Multicomponent fluid	Andrea	CFX	2	October 11, 2004 06:12

July 31, 2019, 07:22		#2
Carlo_P Senior Member Carlo_P Join Date: May 2019 Location: Italy Posts: 176 Rep Power: 8	Hey, if you want, you can take a look into the DecomposeParDict file here: https://github.com/OpenFOAM/OpenFOAM...composeParDict I think that in your case, you have to put the patch in preservePatches. If the geometry is simple (such as a pipe), you can enforce the division in geoemtrical divisions using method simple; simpleCoeffs{ n (divisionInXDirection divisionInYDirection divisionInZDirection); delta 0.001; } I would like to suggest to use the more coplex command only if you are very familiar with parallel computation. In the 99% the scoth method gives very good results