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-   -   Ansys Fluent and Paraview (http://www.cfd-online.com/Forums/fluent/99678-ansys-fluent-paraview.html)

aerospaceman April 9, 2012 15:04

Ansys Fluent and Paraview
 
I don't know how many people want to do this, but chances are there is always someone...

So if anyone wants to run a simulation in Fluent and post-process in Paraview, the way that I've found to work is to export the solution data in Ensight format (binary).

Once that's done, you then have to change the extension to ".case" (information I've found scattered over various other treads; didn't discover it myself).

It then opens in Paraview, at least it worked for me.



I tried impoting the .dat files from Fluent,

but one they have loads of default variables I was not interested in, making it a very large file (200mb in my case, which times the number of time steps is a very large size),

and two,
I wasn't sucessful in doing so.

But if anyone is sucessful I'd be interested in knowing.

If anyone has any tips/best practise information I'd be really interested, as I'm new to Paraview.

vmlxb6 September 19, 2012 11:33

I have a 3D steady state simulation that I ran in Fluent and would like to analyse it using Paraview.

I tried different files to import it in paraview like .encase, .case and .cgns but all I can do is view surfaces. The contour symbol in the filter tool bar is not highlighted so I cannot view different contours.
any help is appreciated. Thanks.

NormalVector September 19, 2012 12:39

Quote:

Originally Posted by aerospaceman (Post 353828)
I don't know how many people want to do this, but chances are there is always someone...

So if anyone wants to run a simulation in Fluent and post-process in Paraview, the way that I've found to work is to export the solution data in Ensight format (binary).

Once that's done, you then have to change the extension to ".case" (information I've found scattered over various other treads; didn't discover it myself).

It then opens in Paraview, at least it worked for me.



I tried impoting the .dat files from Fluent,

but one they have loads of default variables I was not interested in, making it a very large file (200mb in my case, which times the number of time steps is a very large size),

and two,
I wasn't sucessful in doing so.

But if anyone is sucessful I'd be interested in knowing.

If anyone has any tips/best practise information I'd be really interested, as I'm new to Paraview.

I'm trying to postprocess Fluent in Paraview as well and I've run into my own problems so maybe someone here will be able help as the Paraview section of the forums is slightly under used. I'm trying to read a Fluent case as well as transient data files but whenever there is more than one data file for the case in my working directory, Paraview "cannot read data file". Any ideas?

As for importing steady state data (or one time step of a transient simulation), I think I've figured it out. With your .cas and .dat files in your working directory, open up the latest Paraview (3.14, haven't tried on earlier versions) and then open only the .cas file using the "Fluent Case Files" reader in the prompt box that pops up. I believe it automatically reads a data file of the same name.

Once you import your data, you'll notice you can't create stream tracers or contours. This is because the data is Cell Data and contour/stream tracers require Point Data. Apply the "Cell Data to Point Data" filter and you should now be able to apply contours or stream tracers.

I was also able to import into Paraview by exporting an Ensight file from Fluent but I'm not so sure that's the route to take with transient simulations.

vmlxb6 September 19, 2012 15:29

Fantastic !!! thank you very much. it worked.

NormalVector September 19, 2012 15:43

Sure, no problem. If you ever find out how to load Fluent transient data into Paraview, please let me know. I guess I'll just keep searching. : /

jiec827 November 16, 2012 09:37

My Paraview stops running as soon as a FLUENT.cas was selected?
WHY? Could you give me a hand?

PS:win7 x64 Paraview 3.14.1 Fluent 13.0

Edgar90 June 18, 2014 07:46

Quote:

Originally Posted by jiec827 (Post 392526)
My Paraview stops running as soon as a FLUENT.cas was selected?
WHY? Could you give me a hand?

PS:win7 x64 Paraview 3.14.1 Fluent 13.0


I have exactly the same problem. When I try to open the .cas file the program does not respond anymore. My .cas file is around 750 MB

Naresh yathuru March 11, 2015 05:04

steady fluent to paraview
 
Hi everyone,

I m trying to post process my steady fluent simulation using paraview for comparing the openfoam and fluent results.

so i opened the fluent .cas file in paraview . using celldatatopoint data in filter option i got a good plot.
but the problem i have here is that the velocity is shown as components of x ,y,z did anyone had the similar problem?

Can someone help me. what am i missing here?

hrvig June 24, 2015 08:46

I would suggest that you export as ensight gold data format. You will get a file called .encase which you can rename to .case and open it directly in paraview. This approach should work flawlessly


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