How to convert .trn files to .cgns files

cyln · October 6, 2018, 21:04

Hello,

I am running a transient RANS simulation in CFX and outputting .trn files accordingly. My simulation is about to be completed. I would like to convert the written "trn" files to "cgns" files so that I can postProcess all the written transient files using macros in Tecplot. Basic tasks include time-averaging using all the written time-step files, probing property data at any point decided during postProcessing phase.

Cheers
Cyln

Gert-Jan · October 7, 2018, 06:31

The solver manager has export capabilities. In the top-menu-bar look for Tools>Export Results

cyln · October 10, 2018, 17:38

When I do say "export results" as shown in the picture, I can only export surface results. I want to extract results for the whole domain as cgns files.

How can I extract results as cgns for the whole main?

cyln · October 10, 2018, 18:19

As I am using CFX on linux, I figured this out:

In order to extract data from the .res file, I say:
cfx5export -cgns CFD_001.res
This exports the results from the last time step into a cgns file.

However, I want to extract data from transient files. When I say:
cfx5export -cgns CFD_001/1000.trn, it says

" Unable to initialize API: invalid topology.
An error has occured in cfx5export "

Is this because trn file does not include the mesh?

cyln

AtoHM · October 19, 2018, 02:12

Yes probably.
There is something like a -alltimesteps flag to get each trn result.

Opaque · October 20, 2018, 23:25

Follow Gert-Jan'ssuggestion. Use the ANSYS CFX Solver Manager, not ANSYS CFX-Pre.

There is a separate utility for export to multiple formats. Check the documentation for details.

October 6, 2018, 21:04	How to convert .trn files to .cgns files	#1
cyln Senior Member cyln Join Date: Jul 2016 Posts: 102 Rep Power: 9	Hello, I am running a transient RANS simulation in CFX and outputting .trn files accordingly. My simulation is about to be completed. I would like to convert the written "trn" files to "cgns" files so that I can postProcess all the written transient files using macros in Tecplot. Basic tasks include time-averaging using all the written time-step files, probing property data at any point decided during postProcessing phase. Cheers Cyln

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October 7, 2018, 06:31		#2
Gert-Jan Senior Member Gert-Jan Join Date: Oct 2012 Location: Europe Posts: 1,827 Rep Power: 27	The solver manager has export capabilities. In the top-menu-bar look for Tools>Export Results

October 10, 2018, 18:19		#4
cyln Senior Member cyln Join Date: Jul 2016 Posts: 102 Rep Power: 9	As I am using CFX on linux, I figured this out: In order to extract data from the .res file, I say: cfx5export -cgns CFD_001.res This exports the results from the last time step into a cgns file. However, I want to extract data from transient files. When I say: cfx5export -cgns CFD_001/1000.trn, it says " Unable to initialize API: invalid topology. An error has occured in cfx5export " Is this because trn file does not include the mesh? cyln

October 19, 2018, 02:12		#5
AtoHM Senior Member M Join Date: Dec 2017 Posts: 642 Rep Power: 12	Yes probably. There is something like a -alltimesteps flag to get each trn result.

October 20, 2018, 23:25		#6
Opaque Senior Member Join Date: Jun 2009 Posts: 1,803 Rep Power: 32	Follow Gert-Jan'ssuggestion. Use the ANSYS CFX Solver Manager, not ANSYS CFX-Pre. There is a separate utility for export to multiple formats. Check the documentation for details.