Three-phase fluidization: Some knowledge gaps

The most recent review by ostergaard — on the fluid mechanics of three-phase fluidized beds — is updated and broadened, and the more manifest knowledge gaps are identified. A systematic classification of the various modes of three-phase fluidization is presented in order to provide some perspective on the research which has been done and on that which has yet to be done. On a mis a jour et elargi la revue de litterature la plus recente, effectuee par ostergaard, sur la mecanique des fluides des lits fluidises a trois phases; on a ainsi identife les trous de connaissance les plus manifestes. On presente une classification systematique des divers modes de fluidisation a trois phases, afin de mettre en perspective la recherche deja faite et celle qu'il reste a faire dans ce domaine.

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