Sedimentation potential of a concentrated spherical colloidal suspension
Date Issued
2000
Date
2000
Author(s)
DOI
892214E002003
Abstract
The sedimentation behavior of a concentrated suspension of charged spherical particles is investigated theoretically. The sedimentation potential is evaluated taking the effect of double layer polarization into account. A cell model is adopted to describe thepresent multientities system, and a pseudo-spectral numerical scheme is used to solve the governing electrokinetic equations, which comprise a Navior-Stoked equation for flow field and a Poisson equation for electric field. Several interesting phenomena, which are absent if double layer polarization is neglected, are observed. For example, the atio(E*/U*), E* and U* being respectively the scaled sedimentation potential has a minimum if the electrical potential is low, and has a maximum if it is high.
Subjects
電泳
電位
電集層極化
懸浮溶液
Publisher
臺北市：國立臺灣大學化學工程學系暨研究所
Type
report
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892214E002003.pdf
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