[ICEM] Problems with export 2D mesh from ICEM to FLUENT

Bollonga · January 22, 2013, 16:23

Hi guys,

I've been working on the 3D case of the flat plate. I've made a structured mesh, checked it and smooth it 3 times and everything went okay. The issue is that in fluent it shows non-positive volumes, left-handed faces and high skewness elements. How can I fix all that stuff?
Btw I don't know what left-handed faces means.

I upload the icem files here:
https://www.dropbox.com/sh/er8eqcqh617rrt9/Xjq2PuE0DQ

Thanks!

marylou · February 4, 2013, 06:38

Hi every one,

I am a new member of this community so I don't know exactly if this is the right place to write my question...
Anyway, I have a problem to export a 2D mesh from ICEM CFD to Fluent in batch mode. I am using icem and fluent with Linux.When I do the operation using the graphique interface, all is OK, a file mesh.msh is created and consistant for fluent. To make icem run in batch mode, the only solution I have found is to make a script file (.rpl) saving all the steps of the mesh designing using the option Replay scripts and then replaying this script (with the linux command: icemcfd -batch script.rpl). This solution is functionning for all the steps except the one exporting the mesh to fluent.
When I am recording the steps to export the mesh, icem write in the script.rpl the following lines:
ic_undo_group_begin
ic_uns_create_diagnostic_edgelist 1
ic_uns_diagnostic subset all diag_type uncovered fix_fam FIX_UNCOVERED diag_verb {Uncovered faces} fams {} busy_off 1 quiet 1
ic_uns_create_diagnostic_edgelist 0
ic_undo_group_end

When Icem execute this script, it said:
Saved replay log to /panfs/storage/p003858/optim/output.rpl
Starting at command 1, going to end
Current Coordinate system is global
5 command lines replayed.
Replay complete.

Instead of :
Select an unstructured domain.
Running: "/panfs/storage/local/commercial/ansys_inc/v140/icemcfd/linux64_amd/icemcfd/output-interfaces/fluent6" -dom "/panfs/storage/p003858/optim/mesh.uns" -b "mesh.fbc" -dim2d "./mesh"

Running FLUENT V6 Interface Vers. 14.0.3

Creating a Fluent 2D mesh.
Computing connectivity for 198431 cells.
100000 cells
200000 cells
Creating cell sections for 198431 cells.
Checking mesh:
interior faces : 395685
interior walls : 0
boundary faces : 2354
Creating face section for 398039 faces.

FLUENT V6 input file written (file: ./mesh.msh)
... done
When I do it manually using the graphique interface.

Clearly, ICEM is reading the code in the script but it does not understand it and so not it doesn't execute it.

Is anybody has a idea of what should I do to fix this ?

Thank you so much !!!

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January 22, 2013, 16:23		#41
Bollonga Senior Member Francisco Join Date: Mar 2012 Location: Spain Posts: 200 Rep Power: 4	Hi guys, I've been working on the 3D case of the flat plate. I've made a structured mesh, checked it and smooth it 3 times and everything went okay. The issue is that in fluent it shows non-positive volumes, left-handed faces and high skewness elements. How can I fix all that stuff? Btw I don't know what left-handed faces means. I upload the icem files here: https://www.dropbox.com/sh/er8eqcqh617rrt9/Xjq2PuE0DQ Thanks!

February 4, 2013, 06:38		#42
marylou New Member Join Date: Feb 2013 Posts: 2 Rep Power: 0	Hi every one, I am a new member of this community so I don't know exactly if this is the right place to write my question... Anyway, I have a problem to export a 2D mesh from ICEM CFD to Fluent in batch mode. I am using icem and fluent with Linux.When I do the operation using the graphique interface, all is OK, a file mesh.msh is created and consistant for fluent. To make icem run in batch mode, the only solution I have found is to make a script file (.rpl) saving all the steps of the mesh designing using the option Replay scripts and then replaying this script (with the linux command: icemcfd -batch script.rpl). This solution is functionning for all the steps except the one exporting the mesh to fluent. When I am recording the steps to export the mesh, icem write in the script.rpl the following lines: ic_undo_group_begin ic_uns_create_diagnostic_edgelist 1 ic_uns_diagnostic subset all diag_type uncovered fix_fam FIX_UNCOVERED diag_verb {Uncovered faces} fams {} busy_off 1 quiet 1 ic_uns_create_diagnostic_edgelist 0 ic_undo_group_end When Icem execute this script, it said: Saved replay log to /panfs/storage/p003858/optim/output.rpl Starting at command 1, going to end Current Coordinate system is global 5 command lines replayed. Replay complete. Instead of : Select an unstructured domain. Running: "/panfs/storage/local/commercial/ansys_inc/v140/icemcfd/linux64_amd/icemcfd/output-interfaces/fluent6" -dom "/panfs/storage/p003858/optim/mesh.uns" -b "mesh.fbc" -dim2d "./mesh" Running FLUENT V6 Interface Vers. 14.0.3 Creating a Fluent 2D mesh. Computing connectivity for 198431 cells. 100000 cells 200000 cells Creating cell sections for 198431 cells. Checking mesh: interior faces : 395685 interior walls : 0 boundary faces : 2354 Creating face section for 398039 faces. FLUENT V6 input file written (file: ./mesh.msh) ... done When I do it manually using the graphique interface. Clearly, ICEM is reading the code in the script but it does not understand it and so not it doesn't execute it. Is anybody has a idea of what should I do to fix this ? Thank you so much !!!