BEHAVIOURS OF FLUIDIZED BEDS THROUGH FLOW REGIMES OF A COMPLEX FLUID

The behaviours of fluidized beds through the different flow regimes of a complex fluid are analyzed. Numerical simulations show that the fluidization is a continuous transition process. Moreover, many types of fluidized phases as homogeneous, channeling, bubbling phases or mixtures phases are mimed. The phase corresponds with a specific flow regime, while the fluidization is associated with convective instabilities.Original Abstract: Comportamentele de paaturilor fluidizate prin regimuri de curgere diferite ale unui lichid complex sunt analizate. Simulaarile numerice arataa caa fluidizarea este un proces de tranzitie continuu. Mai mult decat atat, multe tipuri de faze fluidizate ca faze omogene saufaze amestecuri sunt modelate. Faza corespunde unui regim de curgere specific, in timp ce fluidizarea este asociataa unor instabilitaati convective.