I am trying to simulate the sedimentation of a mixing tank using VOF multiphase flow in FLUENT. I used DPM model, but I'd rather like to apply zillions of particles and track them like a cloud instead of tracking individual particles because I need to study the particle sedimentation. Any suggestions?
P.S I have simulated the individual particles, and I have no problem in simulating the entire system.
It is not trivial to two way couple VOF and DPM method. And you probably need a super computer to track zillions of particles. FLUENT tracks a parcel (cluster of particles) rather than individual particle which saves computational time significantly.
You can create a surface injection to introduce few thousands particles and then couple it with the fluid flow using drag force.Fluent 14 onwards, there is now a DEM collision model available to take care of particle-particle collision.
However for simulating sedimentation realistically, you would require to include van der Waals force if aggregation is intended to be captured.
Subhasish:
Thank you. Actually I have simulated my model using both VOF and DPM, but the problem is that I have to simulate the sedimentation which needs me to track a cloud of particles, not the individual ones. Creating a surface doesn't help me, because I already have many particles inside the system.
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