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How to give Buoyancy and drag force for a particle in dpm

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Old   May 23, 2016, 09:13
Default How to give Buoyancy and drag force for a particle in dpm
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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?

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Krishna.
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Old   May 23, 2016, 18:34
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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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Old   May 24, 2016, 02:16
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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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Old   May 24, 2016, 03:31
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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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