Reply To: The total mass flow rate in DPM model

[Rob]

Correct re the coupling. 

If you want to see a change with more DPM mass you need to couple (interact) the particles with the flow. That way if there is sufficient particle momentum you'll see a change in the flow field and that will intern show a change in the particle trajectories. But... You may also find the particles slow/accelerate to the flow speed fairly quickly so the differences may be very small, potentially to the point of not being noticeable.