English to Russian Tech/Engineering Medical: Pharmaceuticals ���������

The DEM and experiments showed very good agreement in both the degree and rate of mixing under these processing conditions. However, we must caution that these encouraging results have been obtained for perfectly spherical, free flowing particles. Simulations are currently hampered by both the lack of good models for cohesive forces and the limited number of particles that can be simulated in a reasonable amount of time. Furthermore, dealing with nonspherical particles or size distributions increases the computational time needed for even a relatively small number of particles. At present, simulations are far from close to being applicable to real-world applications and are only useful for small-scale theoretical investigations of specific granular phenomena.