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Ecoulement de fluides newtoniens et non newtoniens à travers des lits fixes stratifiés
Authors:Nour-Eddine Sabiri  Jacques Comiti
Abstract:Fixed beds of plate shape particles have been studied in two different “flow-particle” configurations. From pressure drop measurements performed for a Newtonian fluid flow, two characteristic structural parameters have been determined by using a capillary - type model. The differences concerning the hydrodynamic behaviour of the two configurations are discussed and a factor characterizing the bed anisotropy is proposed. A dimensionless equation allowing the pressure drop determination for Newtonian and non-Newtonian purely viscous fluid flow in the two configurations, for a large range of Reynolds numbers, is proposed and tested with experiments.
Keywords:Mots clé  s: lits fixes stratifié  s  particules parallé    pipé  diques  configuration “  é  coulement-particule”    fluide non-newtonien
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