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Non-Newtonian fluidization of spherical-particle beds by Ivan Machač; Petr Mikulášek; Iva Ulbrichová is a Engineering article available to read on EtoBox.

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Fluidization of spherical-particle beds with viscoelastic shear thinning polymer solutions was experimentally investigated in creeping-and transient-flow regions. The results of measurements show that the course of bed expansion depends on the kind and degree of non-Newtonian anomaly, on the flow region, and on the apparatus wall effect. The limited bed expansion observed during fluidization in the creeping-flow region weakened with the increasing Reynolds number and vanished when a critical value of Reynolds number was exceeded. Empirical equations based on the Carreau viscosity model were suggested for the prediction of minimum fluidization velocity and for bed expansion in both creeping-and transientflow regions.

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Author

Ivan Machač; Petr Mikulášek; Iva Ulbrichová

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0009-2509)

Published

1993

Language

EN

Field

Engineering (Physical Sciences)