A stochastic model of packed‐bed mixing and mass transfer

Abstract

Abstract A new model of packed‐bed behavior based on a second‐order stochastic process is developed and examined. The model takes as the basis process the transitions of fluid “packets” among allowed velocity states. The observable phenomenon, that is, the spatial distribution of packets, is a projection of the velocity state process. Results from the model compare well with results from experiments for mixing in packed beds. Model parameters are consistent, and correlate with the physical parameters of the systems. Present results under mass transfer conditions are inconclusive but encouraging.