Recent progress towards hydrodynamic modelling of dense gas-particle flows

In this paper a state-of-the-art review will be presented on hydrodynamic modeling of dense gas-particle flows as encountered in the fluid bed family of gas-solid contactors. After a brief introduction the different classes of fundamental hydrodynamic models will be discussed together with their physical basis and mutual advantages and disadvantages. Thereafter some typical results will be presented on first principles modeling of dense gas-fluidized beds. Finally the conclusions will be presented and areas which need substantial further attention will be indicated.