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Old   October 15, 2010, 11:38
Default Output tab
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Simon Pereira
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Arapha,

Don't "save mesh file as", that is for our native format.

Instead, go to the output tab, set the solver to Fluent (or whatever you want) and proceed from there.

Best regards,

Simon
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Old   October 15, 2010, 11:47
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Thanks !
I had tried going through the output tab as well. However, when I pick the solver, the latest version it has is only Fluent V6 ? Is that the latest version that comes with ansys12 ? Even if I selected the Fluent V6 solver, then I click the button to 'write input' it asks me to 'save as' an attribute file ? If I do that, then a new window pops up asking me to 'open' a .uns file ? I'm not sure where to go from there/or if I'm even in the right direction...

Thanks a lot for the help !!
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Old   October 16, 2010, 04:54
Default Output Details.
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Yes, the Fluent V6 format is the same as ANSYS Fluent 12 format. Once you get thru the process you will have other options for Binary, ASCII, etc.


The thing to understand is that all the outputs are actually separate executables that run off the saved files. If you don't save your UNS file before starting this process, it doesn't know what to run thru the interface.

So...

1) Select your solver... Apply.

2) Open Bocos, you can actually create boundary conditions on parts or not, but you must open this and apply it to create the boco file.

3) Similar with the attributes file for any solver that supports attributes (I didn't think Fluent did, but I don't want to bother to check right now). Just open, apply and close.

4) Save the project. This makes sure that you have saved versions of all the files to run the output interface with.

5) Actually go to output. You won't need to save the project again if you just saved it... Everything else should be fine.

Have fun.

Simon
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Old   October 17, 2010, 21:08
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Hi Simon,

Thanks again for the help.
I have completed all the steps you mentioned (thanks for the explanations).
I now see an error pop-up on my screen after clicking the last button to write the input file: Version Mismatch, Running Fluent V6 interface Vers.11.6.2, child process exited abnormally', and no .msh file gets written of course. Would you happen to know exactly what this means/or how to fix it ? I am just running the latest version of ICEM CFD...

Thanks for the help !!
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Old   October 18, 2010, 02:18
Default It should work without a problem...
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You are using version 11, which is from 3 years ago. We have had 2 releases since then an another one due out in a couple weeks. But it should still have worked. I am not sure what that error message means, but I will ask around today.

I know this works because we have thousands of Fluent users not complaining, but I am not sure why it failed for you.

Whey I try it in the last release version, starting from converting the blocking to unstructured mesh, I get this in my message window...


Loading domain "hex.uns" ...
Current Coordinate system is global
Current solver is Fluent_V6
loading C:/Program Files/ANSYS Inc/v121/icemcfd/win/icemcfd/output-interfaces/fluent6.bcinfo
Solver Fluent_V6 supports unstructured mesh.
Loading solver parameters from HornDuct.par.
This solver has no parameters
Writing tetin file HornDuct.tin ...
done saving tetin file.
Writing domain "HornDuct.uns" ...
Done saving domain file.
Previous blocking file saved as file HornDuct.blk1
Writing blocking file HornDuct.blk ..
done
loading C:/Program Files/ANSYS Inc/v121/icemcfd/win/icemcfd/output-interfaces/rampant.bcinfo
Saved family boco data to HornDuct.fbc
Saved attribute data to HornDuct.atr
Saving project settings to "HornDuct.prj"
Project saved.
Select an unstructured domain.
Running: "C:/Program Files/ANSYS Inc/v121/icemcfd/win/icemcfd/output-interfaces/fluent6" -dom "C:/My Documents/demo/HornDuct.uns" -b "HornDuct.fbc" "C:/My Documents/demo/HornDuct"

Running FLUENT V6 Interface Vers. 12.0.1

Creating a Fluent 3D mesh.
Computing connectivity for 3888 cells.
Creating cell sections for 3888 cells.
Checking mesh:
interior faces : 10872
interior walls : 0
boundary faces : 1584
Creating face section for 12456 faces.
10872 faces of part FLUID.
144 faces of part INLET.
144 faces of part OUTLET.
1296 faces of part WALLS.

FLUENT V6 input file written (file: C:/My Documents/demo/HornDuct.msh)
... done

Done
Done with translation.
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Old   October 18, 2010, 08:48
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Hi Simon,

Thank you for the taking the time to look into this !!
If it helps, when I select my solver I get the following line: loading /usr/local/apps/ansys_inc/v120/icemcfd/linux64_amd/icemcfd/output-interfaces/fluent6.bcinfo

There is a v121 of icemcfd on our online server, but I get the above message even if I load this up, (it still references v120). Is v121 the most recent version ? I am not sure how to force icem to use v121..

Thanks again !
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Old   December 4, 2010, 07:33
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Hi..
I have to export 2-D structured Multiblock mesh into CGNS format. I have exported 3-D Structured Multiblock mesh very recently, but the same method doesn't seem to work for 2-D.
At feedback window there comes a message saying...Child process exited abnormally.

I followed instructions written here above by PSYMN (for both cases). So i wonder if there is separate method for exporting Multiblock 2-D structured mesh.

Thanks in advance
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Old   December 6, 2010, 04:18
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I have to export multi-block structured mesh for 2-D pipe bend into cgns format.
I tried to export meshes created through O-grid blocking as well as H-grid blocking. But for none of the cases could export mesh successfully.
Whenever i try to use Write Input tab with CGNS solver type...There appears a pop-up window after selecting domains, from Microsoft saying cgns.exe has encountered some problem and needs to close & displays following tabs...

Debug Send Error Report Don't Send

when I click any of the tab, feedback window says..
Child process exited abnormally ....

Please help
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Old   December 6, 2010, 07:02
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if you want to read the mesh in fluent,

you need to select the solver from the Output tab.

then right click the premesh under blocking u will see convert to unstrut mesh. this will save the mesh in .msh format which can be read by fluent
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Old   December 6, 2010, 07:20
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Thanks Jeevan, PSYMN
Actually i use solver developed in my own lab. This solver accepts mesh only in structured CGNS format. So i am trying to export in structured CGNS format but no success yet.
I regularly export multiblock structured mesh for 3-D geometry, & it works fine...never encountered with such problem.

Following is the procedure that I use:
1). Right click on premesh (in the model tree) and select "Convert to Multiblock Mesh".
2). Go to "Output (tab) => Select solver", set the "Output solver" to CGNS.
3). Go to "Output (tab) => Boundary Conditions", set up bocos.
4). Go to "Write Input (tab)" Select domains (all the zones) that are to converted in to CGNS format
5). Then it wants me to select my "input type" parameters... It defaults to Structured based on the file I selected.
6). hit "done".

Any thoughts..!!
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Old   January 31, 2011, 23:38
Default ICEM output blocks does not respect periodic faces
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Hi all -

Since this thread is about ICEM, CGNS and maybe periodic BCs I figure this might be a good place to ask my question. I have a periodic mesh with 90 blocks (multiblock structured mesh) and I want to reduce the number of blocks down while respecting periodicity. Is there anyway of doing this apart of manual merging? Also is there anyway to export periodic BCs in CGNS format using Hexa?

Thanks!
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Old   February 1, 2011, 21:59
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Nope, you probably just need to save it as an unstructured mesh file... (*.uns in ICEM CFD), then go to the output tab, select Fluent V6 and output the *.uns file as a *.msh file.

Multiblock is the old structured format...
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Old   December 29, 2014, 09:31
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I have finished the mesh using a blocking strategy with 25 blocks and I would like to export it to cfx.
But when I export it, cfx error no domains have been defined. and when i try to b.c. in outpt not b.c. able to defined.
I have model cylinder in box .
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