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Old   July 29, 2013, 09:05
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mohsen kh
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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
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Old   August 12, 2013, 13:31
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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.
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Old   August 12, 2013, 14:15
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Quote:
Originally Posted by mturcios777 View Post
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
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Old   August 16, 2013, 09:09
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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:
Code:
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
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Old   November 16, 2013, 04:43
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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...
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Old   November 16, 2013, 10:09
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@hesamgh: Quick answer:
Quote:
Originally Posted by wyldckat View Post
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:
Code:
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.
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