Based on the conepts of discrete vortex method,A new model named 'vortex-particle coupling' for the simulation of fine particle dispersion in flow field is developed and applications to several particulate flows are carried out with Largrange method.This model gives a rather simple way to get instantaneous parameters of particles in flow and some difficulties met in other models cna be bypassed.Numerical results show that the use of this new model in the simulation of particulate flow is successful.
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