[Commercial meshers] how can convert a blockMeshDict file into a mesh for Fluent?

immortality · April 15, 2013, 15:33

i have run a case in OpenFOAM and want to test it also in fluent.i have not acess to gambit now.
How can i convert simple geometry and mesh i created in fluent withot need to install gambit?
I know there is a vice versa tool but i need it reciprocally.
Is it possible?

nanes · April 16, 2013, 05:58

Try foamMeshToFluent

immortality · April 16, 2013, 06:53

thanks.but flent execute it only in 3d mode while my case is 2d.how can delete third dimension?

nanes · April 16, 2013, 07:16

Quote:

Originally Posted by immortality

thanks.but flent execute it only in 3d mode while my case is 2d.how can delete third dimension?

Your OpenFOAM case is 2d, are you sure?

OpenFOAM cases are only 3d, 2d openfoam case is fake because the mesh has one cell in the third dimension.
The first tutorial of OpenFOAM (cavity) has the mesh in this way.

For these reasons, if you want to use a mesh of OpenFOAM with Fluent you must use fluent 3d.

Fluent has 3d and 2d versions but the 2d version read "real" 2d mesh and is not compatible with the OpenFOAM meshes.

immortality · April 16, 2013, 18:32

my case is 2d in real(3d in of) but 2d fluent doesn't accept it.
Isn't a way to modify the file obtained from foammeshtofluent?

nanes · April 17, 2013, 06:27

Quote:

Originally Posted by immortality

my case is 2d in real(3d in of) but 2d fluent doesn't accept it.
Isn't a way to modify the file obtained from foammeshtofluent?

I do not know a method for changing a 3d mesh to get a 2d mesh, but I suggest you to use the 3d mesh in fluent with appropriate BC, for example I think you can use symmetry BC in Fluent to "emulate" empty BC in OpenFOAM.

immortality · April 17, 2013, 08:16

thank you for your helpful answer.
Then i think dimension in z direction should be small or no matter?

nanes · April 17, 2013, 08:30

The important thing is to have one cell in z direction, the size does not matter.

April 15, 2013, 15:33	how can convert a blockMeshDict file into a mesh for Fluent?	#1
immortality Senior Member Ehsan Join Date: Oct 2012 Location: Iran Posts: 2,208 Rep Power: 27	i have run a case in OpenFOAM and want to test it also in fluent.i have not acess to gambit now. How can i convert simple geometry and mesh i created in fluent withot need to install gambit? I know there is a vice versa tool but i need it reciprocally. Is it possible?

April 17, 2013, 08:30		#8
nanes New Member Emanuele Leggio Join Date: May 2009 Posts: 11 Rep Power: 17	The important thing is to have one cell in z direction, the size does not matter. immortality likes this.

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April 16, 2013, 05:58		#2
nanes New Member Emanuele Leggio Join Date: May 2009 Posts: 11 Rep Power: 17	Try foamMeshToFluent

April 16, 2013, 06:53		#3
immortality Senior Member Ehsan Join Date: Oct 2012 Location: Iran Posts: 2,208 Rep Power: 27	thanks.but flent execute it only in 3d mode while my case is 2d.how can delete third dimension?

April 16, 2013, 18:32		#5
immortality Senior Member Ehsan Join Date: Oct 2012 Location: Iran Posts: 2,208 Rep Power: 27	my case is 2d in real(3d in of) but 2d fluent doesn't accept it. Isn't a way to modify the file obtained from foammeshtofluent?

April 17, 2013, 08:16		#7
immortality Senior Member Ehsan Join Date: Oct 2012 Location: Iran Posts: 2,208 Rep Power: 27	thank you for your helpful answer. Then i think dimension in z direction should be small or no matter?