[m5m5kh]

hi dear foamers
I need your help
I used Gambit for modeling of my case which was is a furnace
I want to model flow in a furnace considering it as a porous medium with constant porosity of 0.5.
I do not know how to modify the long tube-shape region as a porous media
please help me if you can.
some one told me I should modify topoSetDict but I do not know how to do it
please help me,I am not so advanced user of openfoam.
If you know please tell me in detail.

thanks
Mohsen

[mturcios777]

If you look at topoSetDict, you can define sets of points/faces/cells with you different entries and sources. For the region you want, you should look at the cylinderToCell source.

[m5m5kh]

Originally Posted by mturcios777

If you look at topoSetDict, you can define sets of points/faces/cells with you different entries and sources. For the region you want, you should look at the cylinderToCell source.

Hi
I used fluent3DtoFoam and I open my "constant/polyMesh" folder
I can see my boudries file but while I want to see cellZones file I just see something like these:
"00/00/000/000/00/00/........"
I do not what to do

how should I modify a porous region for porousSimpleFoam solver

[wyldckat]

Greetings to all!

@Mohsen: Check the file "applications/utilities/mesh/manipulation/topoSet/topoSetDict" for a complete option list: https://github.com/OpenFOAM/OpenFOAM...et/topoSetDict

In addition, have a look into the tutorials that use this utility:

find $FOAM_TUTORIALS -name topoSetDict

On the other hand, if your converted mesh already has the cellZone assigned, then it's just a matter of using the respective name. You can see the existing cellZones by running paraFoam and then turning on the option "Include Zones".

Best regards,
Bruno

[hesamgh]

hi wyldckat

thanks for your useful guidance..

i defined my porous medium in gambit as a fluid and convert it by fluent3DMeshToFoam in openfoam,but i do not know how i can define this medium in toposet or porousZones as porous media?? would you mind please help me to solve this problem...

[wyldckat]

@hesamgh: Quick answer:

Originally Posted by wyldckat

Check the file "applications/utilities/mesh/manipulation/topoSet/topoSetDict" for a complete option list: https://github.com/OpenFOAM/OpenFOAM...et/topoSetDict

In addition, have a look into the tutorials that use this utility:

find $FOAM_TUTORIALS -name topoSetDict

And in your case, have a look into the file "compressible/rhoPorousSimpleFoam/angledDuctImplicit/constant/porosityProperties" that is in the "tutorials" folder.