A note on a boundary condition for spouted beds_中国颗粒学会

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Partic. vol. 8 no. 6 pp. 536-538 (December 2010)
doi: 10.1016/j.partic.2010.08.002

A note on a boundary condition for spouted beds

Norman Epstein*

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helsa@chml.ubc.ca

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.

Keywords

Spouted beds; Annulus flow; Boundary condition; Particle–fluid hydrodynamics