Particle ID

tav98f · June 6, 2011, 20:56

Is there such a thing as a particle ID in CFX?
If there is not (which I imagine is the case becasue I can not find one) then how does CFX keep track of particles?

ghorrocks · June 7, 2011, 19:48

The particles are given a count number. You can see it in CFD-Post. Is this what you mean?

tav98f · June 9, 2011, 16:26

Sorry it took so long to get back. I do not think this will work.

I would be using this ID in CFX solver manager. I made a particle user routine to add some terms to the particle tracking in CFX. I would also like to do some of my own post processing so I want to output some particle attributes from my user routine. To be able to keep track of what particle these attributes are applying to it would be useful to have a particle ID number or some other way to distinguish between particles.

ghorrocks · June 9, 2011, 19:32

Sounds like particle count number is exactly what you want to me. That is, each particle is assigned a number, the first one being 1, then 2 etc. It is not the count of the total particles (but the final particle will equal the total particle count).

tav98f · June 11, 2011, 11:27

I do not see particle count number as a variable that is avaliable for me to pass to my particle user routine. How can I access particle count number in my particle user routine?

sarrazs · December 12, 2017, 15:44

I know this is an old post but I do really need to know how did you manage to get the particle ID in your post or in your user routine.

June 6, 2011, 20:56	Particle ID	#1
tav98f Member Timothy Join Date: Apr 2010 Posts: 33 Rep Power: 16	Is there such a thing as a particle ID in CFX? If there is not (which I imagine is the case becasue I can not find one) then how does CFX keep track of particles?

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June 7, 2011, 19:48		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,870 Rep Power: 144	The particles are given a count number. You can see it in CFD-Post. Is this what you mean?

June 9, 2011, 16:26		#3
tav98f Member Timothy Join Date: Apr 2010 Posts: 33 Rep Power: 16	Sorry it took so long to get back. I do not think this will work. I would be using this ID in CFX solver manager. I made a particle user routine to add some terms to the particle tracking in CFX. I would also like to do some of my own post processing so I want to output some particle attributes from my user routine. To be able to keep track of what particle these attributes are applying to it would be useful to have a particle ID number or some other way to distinguish between particles.

June 9, 2011, 19:32		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,870 Rep Power: 144	Sounds like particle count number is exactly what you want to me. That is, each particle is assigned a number, the first one being 1, then 2 etc. It is not the count of the total particles (but the final particle will equal the total particle count).

June 11, 2011, 11:27		#5
tav98f Member Timothy Join Date: Apr 2010 Posts: 33 Rep Power: 16	I do not see particle count number as a variable that is avaliable for me to pass to my particle user routine. How can I access particle count number in my particle user routine?

December 12, 2017, 15:44		#6
sarrazs Member cfxtwophaseflow Join Date: Aug 2017 Posts: 46 Rep Power: 9	I know this is an old post but I do really need to know how did you manage to get the particle ID in your post or in your user routine.