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Volume 8 Issue 6
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Epstein, N. (2010). A note on a boundary condition for spouted beds. Particuology, 8(6), 536-538. https://doi.org/10.1016/j.partic.2010.08.002
A note on a boundary condition for spouted beds
Norman Epstein *
Department of Chemical & Biological Engineering, The University of British Columbia, 2216 Main Mall, Vancouver, B.C., Canada V6T 1Z3
10.1016/j.partic.2010.08.002
Volume 8, Issue 6, December 2010, Pages 536-538
Received 4 May 2010, Accepted 20 June 2010, Available online 2 October 2010.
E-mail: helsa@chml.ubc.ca
Highlights
Abstract

The boundary condition, zero solids pressure at the top of a particle bed of maximum spoutable height, Hm, is shown to eliminate any resort to empiricism in the derivation of the fluid velocity in the annulus of a spouted bed for which both viscous and inertial effects are taken into account. The same boundary condition fails when applied to a spouted bed for which the bed height H < Hm, especially when H < 0.8Hm.

Graphical abstract
Keywords
Spouted beds; Annulus flow; Boundary condition; Particle–fluid hydrodynamics
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