.trk file variables in particle tracking

cfdatrmit · September 17, 2010, 11:55

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, 03:35

Hii,

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

Suman Sapkota · April 1, 2018, 03:50

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?

September 17, 2010, 11:55	.trk file variables in particle tracking	#1
cfdatrmit New Member Join Date: Oct 2009 Posts: 2 Rep Power: 0	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!

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February 16, 2012, 03:35		#2
cfd_begin New Member AKS Join Date: Feb 2012 Posts: 25 Rep Power: 14	Hii, I am facing the same problem. Have you solved it. plz let me know....

April 1, 2018, 03:50		#3
Suman Sapkota Member Suman Sapkota Join Date: Feb 2018 Posts: 32 Rep Power: 8	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?