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How to give Buoyancy and drag force for a particle in dpm |
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May 23, 2016, 09:13 |
How to give Buoyancy and drag force for a particle in dpm
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#1 |
New Member
KcN
Join Date: Apr 2016
Posts: 13
Rep Power: 10 |
hi,
Iam using particle tracking to know how many particles are trapped. for this i have to give buoyancy and drag force for particle. But i cannot find these forces in fluent dpm. can any one tell me where can i activate these forces? Regards, Krishna. |
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May 23, 2016, 18:34 |
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#2 |
Senior Member
Join Date: Mar 2015
Posts: 892
Rep Power: 18 |
Buoyancy is affected by the gravity and is included by default when gravity is enabled. The drag force law can be specified in the discrete phase model under injections.
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May 24, 2016, 02:16 |
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#3 |
New Member
KcN
Join Date: Apr 2016
Posts: 13
Rep Power: 10 |
Thank You for the reply.
These are the only forces I can activate in dpm. Staffman lift force, Virtual mass force,Pressure gradient force. which one to choose? |
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May 24, 2016, 03:31 |
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#4 |
Senior Member
Join Date: Mar 2015
Posts: 892
Rep Power: 18 |
Choose your drag law of the particles in DPM via: Discrete Phase Model > Injections... > injection-0 > Physical Models > Drag Law. Use Stokes-Cunningham for submicron particles, otherwise the spherical drag law (default) is probably appropriate.
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buoyancy force, dpm fluent, particle tracking |
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