Modeling of particles in a Fluid

arien009 · May 23, 2011, 19:30

Hi, how do I model particles in a fluid and how can I see their behavior when subjected to external disturbance? Can I do it without particle injection? Thanks.

ghorrocks · May 23, 2011, 19:59

You can either model particles directly with particle tracking (ie lagrangian) or as a continuum (ie eularian).

arien009 · May 23, 2011, 22:36

Can I check how do I choose the Lagrangian method? Will ANSYS CFX be able to display the static particles in the fluid, under no loading or flow? means just the particles floating around the fluid or consolidating at the bottom over time?

Thanks.

ghorrocks · May 24, 2011, 08:50

Do the tutorials for how to run a particle tracking model.

CFX can model particles under no flow and get them to slowly sink. CFX cannot model building up a bed of particles with particle tracking, however.

arien009 · May 24, 2011, 12:05

Thanks Glenn, I did almost every tutorial for ANSYS CFX but I did not see that tutorial. Can you enlighten me which is it? Thanks in advance!

ghorrocks · May 24, 2011, 20:14

I am not in the office today so I cannot give you the exact name, but several of them use particle tracking. I think the butterfly valve one uses particle tracking to get erosion rates. That is one example.

May 23, 2011, 19:30	Modeling of particles in a Fluid	#1
arien009 New Member Join Date: May 2011 Posts: 15 Rep Power: 15	Hi, how do I model particles in a fluid and how can I see their behavior when subjected to external disturbance? Can I do it without particle injection? Thanks.

May 23, 2011, 19:59		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,872 Rep Power: 144	You can either model particles directly with particle tracking (ie lagrangian) or as a continuum (ie eularian). mattedi likes this.

May 23, 2011, 22:36	Modeling of particles in a Fluid	#3
arien009 New Member Join Date: May 2011 Posts: 15 Rep Power: 15	Can I check how do I choose the Lagrangian method? Will ANSYS CFX be able to display the static particles in the fluid, under no loading or flow? means just the particles floating around the fluid or consolidating at the bottom over time? Thanks.

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May 24, 2011, 08:50		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,872 Rep Power: 144	Do the tutorials for how to run a particle tracking model. CFX can model particles under no flow and get them to slowly sink. CFX cannot model building up a bed of particles with particle tracking, however.

May 24, 2011, 12:05		#5
arien009 New Member Join Date: May 2011 Posts: 15 Rep Power: 15	Thanks Glenn, I did almost every tutorial for ANSYS CFX but I did not see that tutorial. Can you enlighten me which is it? Thanks in advance!

May 24, 2011, 20:14		#6
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,872 Rep Power: 144	I am not in the office today so I cannot give you the exact name, but several of them use particle tracking. I think the butterfly valve one uses particle tracking to get erosion rates. That is one example.