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February 6, 2009, 12:50 |
how to export cfx result to CGNS format
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#1 |
Guest
Posts: n/a
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I got a very strange problem as I try to export cfx results in solver to CGNS format. It seems everything is all right. But as I check the results in tec360, I found some of them are lost. I can see all the obtained variables in CFX-post, but I can't see all of them in tecplot. I already choose level3 as output option, also include all boundary data.
does anybody give me some idea on this? what's wrong with my operation? many thanks in advance littlelz |
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April 15, 2010, 11:30 |
I can confirm your observation - here is a bug
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#2 |
New Member
Gert Lindner
Join Date: Jun 2009
Location: Berlin
Posts: 8
Rep Power: 17 |
I exported in a multicomponent transient run some flow variables to *.trn (e.g. Helium Molar Fraction), Then I did an export to cgns in the same manner (export level 1-3) as you, but the Molar Fraction is'nt present in tec360. Although I can see it in "Data Set Information" as Nodal but without Min/Max. I think it is a gap in the cfx5export-tool ... Sometimes it's work accidental. In another run (another mesh, another problem) the export line described above works fine.
Please help in that topic! I have prepared some files (*.res, *.cgns about 500MB each) Regards Gert Last edited by hungryfish; April 15, 2010 at 11:49. Reason: spelling |
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April 16, 2010, 04:02 |
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#3 |
Member
Ali Torbaty
Join Date: Jul 2009
Location: Sydney, Australia
Posts: 72
Rep Power: 17 |
last month I tried to convert CFD results of a home made code into CGNS and import them into CFX, I used CGNS libraries available on their website, it works, however part of the information lost. it should be noted that CFX, when importing, does not support many features (e.g. transition solution, Regions, Zone connection, preiodic crossing,...). Then it is likely that CFX engine for export is using the same routines and also doesnot support part of these features for export.
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April 29, 2010, 09:15 |
how to export cfx result to CGNS format
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#4 |
New Member
Gert Lindner
Join Date: Jun 2009
Location: Berlin
Posts: 8
Rep Power: 17 |
Hallo,
meanwhile I found a solution to see in Tecplot the desired variable - here molar fraction of helium: We need an extra list of required fluid variables in cfx5pre - "Output Control - Extra Output Var. List" additionally to "TRANSIENT RESULTS". Here as an example a result specification for a transient run: RESULTS: Extra Output Variables List = He Ideal Gas.Molar Fraction File Compression Level = Default Option = Standard END TRANSIENT RESULTS: Transient Results File Compression Level = Default Include Mesh = No Option = Selected Variables Output Variables List = Absolute Pressure,Density,Dynamic Viscosity,Eddy Viscosity,He Ideal Gas.Density,He Ideal Gas.Dynamic Diffusivity,He Ideal Gas.Dynamic Viscosity,He Ideal Gas.Kinematic Diffusivity,He Ideal Gas.Local Speed of Sound,He Ideal Gas.Mass Concentration,He Ideal Gas.Mass Flux,He Ideal Gas.Mass Fraction,He Ideal Gas.Molar Concentration,He Ideal Gas.Molar Fraction,Mach Number,Pressure,Total Pressure,Total Temperature,Temperature,Velocity,Velocity Correlation OUTPUT FREQUENCY: Option = Timestep Interval Timestep Interval = 1 END The generated *.trn -files are able to get the right base for cfx5export -> CGNS (Result Level 2) , then I can see the molar fraction in data sets of Tecplot. Gert |
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