Collision Effect And Particle Information Update In Particulate Fluid Flow Simulations

摘要

To update particle information in a particulate fluid flow simulation, the new positions of the particles are determined by the balance of all forces, and such forces are calculated by taking surface integrals along the particle-fluid interface to reduce CPU overhead. A 3-D collision scheme for ellipsoidal particles to determine whether two or more ellipsoidal particles in the fluid flow collide, and if so, determine the location of the collision point between two colliding particles is also disclosed. Other aspects involve predicting the new location and orientation of each of the colliding particles after collision.