Difference between fluentMeshToFoam and Fluent3DMeshToFoam

thekay · November 27, 2009, 08:29

Hello all. I am new here and I'd like to greet you all.

I have been working with OpenFOAM for the last couple of months. I have set up a few simple cases and parallel processing and I am getting deeper into it.

I have been wondering what is the difference between fluentMeshToFoam and fluent3DMeshToFoam. As far as I can see, there is not any significant difference. Is this correct? In which cases should one use one command or the other?

Thank you.

fra76 · November 28, 2009, 13:37

fluentMeshToFoam is the old code. It can handle 2D Fluent meshes but struggles with some 3D meshes (for example, meshes with hanging nodes)
fluent3DMeshToFoam is newer. Can handle only 3D meshes, but it does this much better than the old one. If you have a 3D mesh, this has to be preferred, in my opinion.

Hope this helps,
Francesco

thekay · November 29, 2009, 17:22

Thank you. This was helpful. I will come back to this thread if I have more questions.

asoltoon · January 17, 2013, 11:38

Hello guys,

How can I use this function? when I write "fluentMeshToFoam <e.g. myFileName>" it says "bash: syntax error near unexpected token `newline' " .
Is there any package to be installed? If yes, how?

Thanks in advance.

asoltoon · January 17, 2013, 11:43

I wrote the incorrect syntax, it should be like this:

"fluent3DMeshToFoam filename.msh"

doubtsincfd · January 18, 2013, 12:00

Also, for cyclic patches fluent3dMeshToFoam writes the patches in the ordered way but fluentMeshToFoam does not. I had experienced this in v2.0. Please verify if this behavior is still the same.

dasith0001 · October 8, 2024, 22:15

Hi,

I know this is kind of a old thread, but can anyone one verify the following ?
please note that I am running chtMultiRegion case.

When I use fluentToMeshFoam, I do not get any internal boundaries in polyMesh/boundary folder. There are no issues then running the case.

However when I use fluent3DToMeshFoam, I get this internal boundaries in the boundary folder. Can you please let me know how to treat/rename these internal BCs ?

Thank you,
Dasith

November 27, 2009, 08:29	Difference between fluentMeshToFoam and Fluent3DMeshToFoam	#1
thekay Member Costas K Join Date: Nov 2009 Location: UK Posts: 51 Rep Power: 17	Hello all. I am new here and I'd like to greet you all. I have been working with OpenFOAM for the last couple of months. I have set up a few simple cases and parallel processing and I am getting deeper into it. I have been wondering what is the difference between fluentMeshToFoam and fluent3DMeshToFoam. As far as I can see, there is not any significant difference. Is this correct? In which cases should one use one command or the other? Thank you.

January 17, 2013, 11:38	How to use fluentMeshToFoam or fluent3dMeshToFoam?	#4
asoltoon Member Ali Khalifesoltani Join Date: Mar 2011 Location: Esfahan, Iran Posts: 56 Rep Power: 15	Hello guys, How can I use this function? when I write "fluentMeshToFoam <e.g. myFileName>" it says "bash: syntax error near unexpected token `newline' " . Is there any package to be installed? If yes, how? Thanks in advance.

January 17, 2013, 11:43	Solved	#5
asoltoon Member Ali Khalifesoltani Join Date: Mar 2011 Location: Esfahan, Iran Posts: 56 Rep Power: 15	I wrote the incorrect syntax, it should be like this: "fluent3DMeshToFoam filename.msh"

January 18, 2013, 12:00		#6
doubtsincfd Senior Member Join Date: Nov 2009 Location: Michigan Posts: 135 Rep Power: 17	Also, for cyclic patches fluent3dMeshToFoam writes the patches in the ordered way but fluentMeshToFoam does not. I had experienced this in v2.0. Please verify if this behavior is still the same. Haitham Osman CFD likes this.

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November 28, 2009, 13:37		#2
fra76 Senior Member Francesco Del Citto Join Date: Mar 2009 Location: Zürich Area, Switzerland Posts: 237 Rep Power: 18	fluentMeshToFoam is the old code. It can handle 2D Fluent meshes but struggles with some 3D meshes (for example, meshes with hanging nodes) fluent3DMeshToFoam is newer. Can handle only 3D meshes, but it does this much better than the old one. If you have a 3D mesh, this has to be preferred, in my opinion. Hope this helps, Francesco

November 29, 2009, 17:22		#3
thekay Member Costas K Join Date: Nov 2009 Location: UK Posts: 51 Rep Power: 17	Thank you. This was helpful. I will come back to this thread if I have more questions.

October 8, 2024, 22:15		#7
dasith0001 Senior Member Desh Join Date: Mar 2021 Location: Sydney Posts: 118 Rep Power: 5	Hi, I know this is kind of a old thread, but can anyone one verify the following ? please note that I am running chtMultiRegion case. When I use fluentToMeshFoam, I do not get any internal boundaries in polyMesh/boundary folder. There are no issues then running the case. However when I use fluent3DToMeshFoam, I get this internal boundaries in the boundary folder. Can you please let me know how to treat/rename these internal BCs ? Thank you, Dasith