https://scholars.lib.ntu.edu.tw/handle/123456789/408505
標題: | Sedimentation potential of a concentrated spherical colloidal suspension | 作者: | Lee E. Chu J.-W. Hsu J.-P. |
公開日期: | 1999 | 卷: | 110 | 期: | 23 | 起(迄)頁: | 11643-11651 | 來源出版物: | Journal of Chemical Physics | 摘要: | 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 the present multientities system, and a pseudospectral numerical scheme is used to solve the governing electrokinetic equations, which comprise a Navior-Stokes 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 ratio (E*/U*), E*, and U* being, respectively, the scaled sedimentation potential and the scale velocity, has a minimum if the electrical potential is low, and has a maximum if it is high. ? 1999 American Institute of Physics. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/408505 | ISSN: | 00219606 | DOI: | 10.1063/1.479103 |
顯示於: | 化學工程學系 |
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