[bussaco8]

Hello all!
I have a case which uses chtMultiRegionSimpleFoam with a solid region and a fluid region. I am trying to decompose the case into 4 processors, using the following decomposeParDict file:

/*--------------------------------*- C++ -*----------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Version:  4.1                                   |
|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       dictionary;
    location    "system";
    object      decomposeParDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

numberOfSubdomains 4;

method          simple;

simpleCoeffs
{
    n               (2 2 1);
    delta           0.001;
}

hierarchicalCoeffs
{
    n               (1 1 1);
    delta           0.001;
    order           xyz;
}

manualCoeffs
{
    dataFile        "";
}

distributed     no;

roots           ( );


// ************************************************************************* //

When I run in the terminal

decomposePar -allRegions

It decomposes in only 2 processors and uses the scotch method instead, almost as it completely ignores my decomposeParDict.


However, if I run the decomposePar shown above in a one-region case, the execution runs well.


How can I fix this?


Thanks and best regards,
João Gil

[Bloerb]

Put the decomposeParDict into the region folders.
E.g
system/fluid/decomposeParDict
system/solid/decomposeParDict

[bussaco8]

Yes, I did that and works now.
Also, it's better to use the scotch mode, using the decomposeParDict shown below.

FoamFile
{
    version     2.0;
    format      ascii;
    class       dictionary;
    location    "system";
    object      decomposeParDict;
}
numberOfSubdomains 4;
method          scotch;
scotchCoeffs
{
}
distributed     false;
roots           ( );

Anyway, thanks a lot for the help!