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Computational Models for Polydisperse Particulate and Multiphase Systems by Daniele L. Marchisio, Rodney O. Fox

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6

Hard-sphere collision models

In this chapter we consider models for collisions between smooth (i.e. frictionless) spherical particles with identical (monodisperse) or different (polydisperse) densities and diameters. For simplicity, we consider only collisions during which the particle mass and diameter are conserved, and exclude other processes that might change these properties (e.g. surface condensation or aggregation (Fox et al., 2008)). Likewise, assuming smooth spherical particles means that the particle angular momentum does not change during a collision, and hence only the particle velocity need be accounted for in the kinetic equation. We limit the discussion to hard-sphere collisions, which implies that the particle velocities after ...

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