A Coarse-Grained Two-Fluid Model for Gas-Solid Fluidized Beds:

摘要: Due to increasing computer power the numerical simulation of fluidized and moving beds has become feasible. However, while kinetic theory based CFD (Computational Fluid Dynamics) a valuable design tool for modeling pilot plant scale gas-solid bed reactors, fully resolved industrial reactor is still nearly unfeasible. It is, therefore, common use sub-grid models account effect small unresolved structures on large scales when using coarse grids. generally agreed that influence these drag force key parameter in prediction hydrodynamics beds. We present modification dealing with heterogeneous force. assumed appear as distinct clusters particles within an interstitial dilute particle phase. The phase itself consist homogeneously distributed enabling ap...