MASS-TRANSFER ENHANCEMENT BY SUSPENSIONS IN A SHEAR-FLOW

被引：7
|
作者：
DESLOUIS, C
EZZIDI, A
TRIBOLLET, B
机构：
[1] UPR15 du CNRS 'Physique des Liquides et Electrochimie', Université Pierre et Marie Curie, Paris Cedex 05, 75252, tour 22, 4, place Jussieu
来源：
JOURNAL OF APPLIED ELECTROCHEMISTRY | 1991年 / 21卷 / 12期
关键词：
D O I：
10.1007/BF01041451
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Electrochemical measurement of mass transfer enhancement in a dilute suspension of particles, due to particle rotation in the presence of a shear flow, has been studied with a Couette cell. An effective diffusivity D(e) involving the Peclet number Pe of the particles and the molecular diffusivity D of the solute was obtained for low particle volume fraction-phi as D(e) = D(1 + 3.5-phi-Pe1/2). From steady-state and transient data, it was shown that aggregation may occur with alumina particles and that inertial effects due to centrifugation reveal a marginal layer free of particles near the rotating inner cylinder.
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页码：1081 / 1086
页数：6
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