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-   -   Saving particle (DPM) data to file? (http://www.cfd-online.com/Forums/fluent/41325-saving-particle-dpm-data-file.html)

Philip June 9, 2006 04:35

Saving particle (DPM) data to file?
 
Hi

I'm running a transient case with a discrete phase model.

I find two ways to write particle data to a file.

1) The first alternative is to use "display/particle-tracks/current-position/write" to file. Then I get data for all particles in the domain.

2) The second alternative is to use "report/discrete-phase/sample/default-interior" Then, as far as I understand when I pick default-interior, I should also get the particle data for all particles in the domain.

However, I will not get the same data in the two files. I get much less data in the second case, why is that? Does it save data in a different way? and do I really get all data when I chose default-interior?

I need to use the second alternative in order to be able to save data continuously during computation, so its important to get it right.

Regards Philip

adriano June 10, 2006 06:54

Re: Saving particle (DPM) data to file?
 
I think is better to use a UDF to define your output format in case 2).

Try to have a look to UDF Manual or say as which are your particle tracking values.

Regards.

Adriano

Philip June 12, 2006 01:41

Re: Saving particle (DPM) data to file?
 
Thanks Adriano I did write a UDF. But the thing is that, even if I write a UDF-output file I still only reach the particles in the specified surfaces which I pick, default-interior here, and I'm still not able to reach all particles in the domain.

If you or anyone else know how to reach all particles, it would be a great help for me.

Philip


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