@李东岳
Dear Master Li
Thank you very much for this summary. I will lern from it how to continue the development of a debris flow solver that uses Eulerian VOF for air and two mixing fluids (clay-silt-sand suspension and fine gravel) and 2-way coupled Lagrangian particles for coarser gravel. It is a variation of interMixingFoam (called debrisInterMixing) combined with DPMFoam (called debrisInterMixLP).
I have one question: You stated that the Euler-Lagrange-Algorithmus is good but expensive. I would like to know your opinion, if I may implement two kinematic clouds in DPMFoam, one that accounts for particle collisions (larger stones but smaller than gridsize) and one that only accounts particle-wall collisions (many gravel particles). This way, I could model erosion...
Thank you for any comment on this
Albrecht v.Boetticher