Multiphase How to controling the time of particle injection

xyq916 · January 15, 2015, 03:24

In cfx, how to controlthe time of particle injection. For example, I want to inject/introduce the particle after the flow solution was converged to about 6 orders of magnitude. how to control the time of particle injection? In Domain , Inlet boundary(particle behavior) or solver controler? Could you give me a hint? Please help me! Thanks a lot!

ghorrocks · January 18, 2015, 06:53

This is best done by doing an initial simulation with no particle tracking to the convergence you specify, and using it as the initial condition of a second simulation with particle tracking. I would not bother with timing injection as you recommend.

xyq916 · January 18, 2015, 07:09

Quote:

Originally Posted by ghorrocks

This is best done by doing an initial simulation with no particle tracking to the convergence you specify, and using it as the initial condition of a second simulation with particle tracking. I would not bother with timing injection as you recommend.

Thank you for your help!

January 15, 2015, 03:24	Multiphase How to control the time of particle injection	#1
xyq916 New Member Bruce Xiao Join Date: Jan 2015 Posts: 26 Rep Power: 11	In cfx, how to controlthe time of particle injection. For example, I want to inject/introduce the particle after the flow solution was converged to about 6 orders of magnitude. how to control the time of particle injection? In Domain , Inlet boundary(particle behavior) or solver controler? Could you give me a hint? Please help me! Thanks a lot! Last edited by xyq916; January 16, 2015 at 03:32. Reason: modify message

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January 18, 2015, 06:53		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,871 Rep Power: 144	This is best done by doing an initial simulation with no particle tracking to the convergence you specify, and using it as the initial condition of a second simulation with particle tracking. I would not bother with timing injection as you recommend.