[alainislas]

Hello,

I'd like to kindly ask if someone in the forum knows any kind of rule of thumb to determine an appropriate number of particles per parcel for Eulerian - Lagrangian simulations, especially to those applications dealing with dense flows (alpha > 10%).

If my computational power lets me to solve up to 5M parcels. Would it be advisable to:

1. Lets say, represent 100,000 real particles by 1 parcel? (My system has 5e11 physical dust particles)
2. Is there any threshold value for which the number of particles per parcel becomes unsufficient to model reality?

I would appreciate any reference. Thank you