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-   -   .trk file variables in particle tracking (https://www.cfd-online.com/Forums/cfx/80180-trk-file-variables-particle-tracking.html)

cfdatrmit September 17, 2010 10:55

.trk file variables in particle tracking
 
Hi all,

I've been looking in the manuals for information on the particle tracking file. Does anyone know what the variables that CFX outputs into its .trk file from particle tracking. I tracked one particle stream and opened the .trk file in notepad which gives this:
105
1 -2.000000 4.520412 4.128771 0.0000000E+00
0.0000000E+00 4.9999999E-06 7662425. 1.000000 0.0000000E+00
0.0000000E+00 6.5253494E-14
1 -1.900000 4.520165 4.128793 0.1539223
0.1000004 4.9999999E-06 7662425. 0.6268228 -2.4222441E-03
2.1734087E-04 6.5253494E-14
1 -1.538350 4.518776 4.128928 0.7284727
0.4616528 4.9999999E-06 7662425. 0.6330290 -2.2362103E-03
2.4497270E-04 6.5253494E-14
1 -1.301596 4.517958 4.129019 1.101518
0.6984086 4.9999999E-06 7662425. 0.6369488 -2.1575745E-03
2.4162982E-04 6.5253494E-14
1 -1.180058 4.517548 4.129065 1.292174
0.8199469 4.9999999E-06 7662425. 0.6389125 -2.1305513E-03
2.3861929E-04 6.5253494E-14
1 -0.8277293 4.516370 4.129196 1.842072
1.172278 4.9999999E-06 7662425. 0.6431691 -2.1652121E-03
2.3706595E-04 6.5253494E-14
.... and so on...

Also is there a way to extract certain particle variables out and output them into a file itself?
Thanks!
:)

cfd_begin February 16, 2012 02:35

Hii,

I am facing the same problem. Have you solved it. plz let me know....

Suman Sapkota April 1, 2018 02:50

Hello,

I am conducting a steady state analysis of pump and I am looking to track the particles (more or less same example as butterfly valve with erosion tutorial). The problem is I am only generating blank particle file. The .trk files are simply empty. Also, the .trk file is only created for 1 particle with pT1.trk file. How do I keep track of all the 20 particles? Do anyone has a way around it? or, helpful links?

While I am at it, would it be possible to generate impact velocity data of those particles from CFX?


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