Dpm

Mohsin · April 1, 2010, 04:00

How can i initialize the the injection particles once i calculate the particle tracking in DPM modeling. Please guide

Thanks

sega · April 1, 2010, 17:20

You can't track them without injecting / initializing them.
So, what do you want?

Mohsin · April 2, 2010, 01:18

Ya i Know that. What i meant was that once i calculate particle track it gives me summary of the particle tracks that these zones have this much of particles trapperd etc. But when I press the track button again it gives me different values in summary. why is it doing like this? Do i need to initialize the injected particle and then press the particle tracking? I m really confused./ I hope i made you understand about my problem and I also hoe that you may have a solution to this...

sega · April 2, 2010, 06:04

You will not have to initilize the particles in the way you intitalize the field values.

Where do your particles start from?
What kind of injection do you use?

Mohsin · April 3, 2010, 10:11

Thank you Saga

Actually i got my answer. I was getting different results. that was because of stochastic tracking which i had enabled for turbulence of the particles. What stochastic tracking does is that it assumes values which are different in every case thats why it was giving me difffernt values.

i was using surface injection. and particles strat from upper inlet into the cylinder.

April 1, 2010, 04:00	Dpm	#1
Mohsin Senior Member Mohsin Mukhtar Join Date: Mar 2010 Location: South Korea Posts: 249 Rep Power: 17	How can i initialize the the injection particles once i calculate the particle tracking in DPM modeling. Please guide Thanks

April 1, 2010, 17:20		#2
sega Senior Member Sebastian Gatzka Join Date: Mar 2009 Location: Frankfurt, Germany Posts: 729 Rep Power: 20	You can't track them without injecting / initializing them. So, what do you want? __________________ Schrödingers wife: "What did you do to the cat? It's half dead!"

April 2, 2010, 06:04		#4
sega Senior Member Sebastian Gatzka Join Date: Mar 2009 Location: Frankfurt, Germany Posts: 729 Rep Power: 20	You will not have to initilize the particles in the way you intitalize the field values. Where do your particles start from? What kind of injection do you use? __________________ Schrödingers wife: "What did you do to the cat? It's half dead!"

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April 2, 2010, 01:18		#3
Mohsin Senior Member Mohsin Mukhtar Join Date: Mar 2010 Location: South Korea Posts: 249 Rep Power: 17	Ya i Know that. What i meant was that once i calculate particle track it gives me summary of the particle tracks that these zones have this much of particles trapperd etc. But when I press the track button again it gives me different values in summary. why is it doing like this? Do i need to initialize the injected particle and then press the particle tracking? I m really confused./ I hope i made you understand about my problem and I also hoe that you may have a solution to this...

April 3, 2010, 10:11		#5
Mohsin Senior Member Mohsin Mukhtar Join Date: Mar 2010 Location: South Korea Posts: 249 Rep Power: 17	Thank you Saga Actually i got my answer. I was getting different results. that was because of stochastic tracking which i had enabled for turbulence of the particles. What stochastic tracking does is that it assumes values which are different in every case thats why it was giving me difffernt values. i was using surface injection. and particles strat from upper inlet into the cylinder.