wyldckat / DESModelRegions

Bringing back DESModelRegions to OpenFOAM 5 and 6

DESModelRegions

DESModelRegions is a function object re-adapted from OpenFOAM® 2.4.x to OpenFOAM 5 and 6.

It has been created for two reasons:

• Because of this feature request: https://bugs.openfoam.org/view.php?id=2763

• And because some people also need this on OpenFOAM 6: https://www.cfd-online.com/Forums/openfoam-solving/117083-how-use-desmodelregions-function-object.html

This git repository was brought to you by Bruno Santos (wyldckat@github working at FSD blueCAPE Lda).

This will be contributed to the OpenFOAM Foundation after a feedback period from people who use this. So please report at https://www.cfd-online.com/Forums/openfoam-solving/117083-how-use-desmodelregions-function-object.html with which turbulence models you have tested this and if it worked or not.

Disclaimer and License

This offering is not approved or endorsed by OpenCFD Limited, producer and distributor of the OpenFOAM software via www.openfoam.com, and owner of the OPENFOAM® and OpenCFD® trade marks.

This is bound to the same license as OpenFOAM, namely GNU Public License v3. Quoting from OpenFOAM's license statement:

OpenFOAM is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.

You should have received a copy of the GNU General Public License
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.

How to get+build DESModelRegions

For getting and building from git:

git clone git://github.com/wyldckat/DESModelRegions.git
cd DESModelRegions
wmake
wclean

Or for getting and building from zip:

wget "https://github.com/wyldckat/DESModelRegions/archive/master.zip" -O DESModelRegions.zip
unzip DESModelRegions.zip
cd DESModelRegions-master
wmake
wclean

How to use it

1. You must use the turbulence model SpalartAllmarasDES or one of its derivatives, as shown in the diagram here: https://cpp.openfoam.org/v5/classFoam_1_1LESModels_1_1SpalartAllmarasDES.html

2. For the function object, simply add the following block to your system/controlDict, inside the block functions, e.g.:

functions
{
    desField
    {
        type            DESModelRegions;
        functionObjectLibs ("libDESModelRegions.so");
        //region "region0";
        //timeStart 0.0;
        //timeEnd 10.0;
        writeControl timeStep;
        writeInterval  5000;
    }
}

The commented lines can be uncommented and used if necessary.