[m5m5kh]

Hi Foamers
I want to define a sphere inside a cubic block and cubic block it self as a porous media.I know I should use topoSetDict but I have no idea how to define the sphere as a porous medium.
I used celltobox for defining my domain as as a porous medium in my previous case.
what should I do?

regards
Mohsen

[wyldckat]

Hi Mohsen,

Have a look into this file: https://github.com/OpenFOAM/OpenFOAM...et/topoSetDict

You can find it on your system by running:

find $FOAM_UTILITIES  -name topoSetDict

But keep in mind that if your internal mesh isn't already cut into the shape of the sphere, then all you get is a selection of the cells that are inside the sphere selection.

Best regards,
Bruno

[m5m5kh]

hi bruno
I know spheretocell is good
but how should I cut the sphere out of the cubic domain?
for example I used topoSet in terminal and define the origin and radius of sphere for porosity 0.5 and I want to set the prosity for cubic domain around the sphere as for example 0.2
what should I do with that domain ?
is the zone to cell OK?

br
Mohsen

Originally Posted by wyldckat

Hi Mohsen,

Have a look into this file: https://github.com/OpenFOAM/OpenFOAM...et/topoSetDict

You can find it on your system by running:

find $FOAM_UTILITIES  -name topoSetDict

But keep in mind that if your internal mesh isn't already cut into the shape of the sphere, then all you get is a selection of the cells that are inside the sphere selection.

Best regards,
Bruno

[wyldckat]

Originally Posted by m5m5kh

but how should I cut the sphere out of the cubic domain?

Quick answer: read the thread http://www.cfd-online.com/Forums/ope...mesh-used.html - there you'll find how 2 meshes are created, where one is shaped like a sphere and the other is a cube that is around that sphere, then they are merged+stiched together.

[m5m5kh]

thanks bruno
I will follow it

br
Mohsen

Originally Posted by wyldckat

Quick answer: read the thread http://www.cfd-online.com/Forums/ope...mesh-used.html - there you'll find how 2 meshes are created, where one is shaped like a sphere and the other is a cube that is around that sphere, then they are merged+stiched together.