Effect of concentration on settling velocity of sediment particles

The drag coefficient for dispersed particles settling in a fluid is related to the particle Reynolds number with the same function as that used for a single particle falling in a clear fluid, after taking into account the effects of concentration both on the effective density of particles and on the...

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主要作者: Cheng, Nian-Sheng
其他作者: School of Civil and Environmental Engineering
格式: Article
語言:English
出版: 2012
主題:
在線閱讀:https://hdl.handle.net/10356/94518
http://hdl.handle.net/10220/7649
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機構: Nanyang Technological University
語言: English
實物特徵
總結:The drag coefficient for dispersed particles settling in a fluid is related to the particle Reynolds number with the same function as that used for a single particle falling in a clear fluid, after taking into account the effects of concentration both on the effective density of particles and on the viscosity of fluid-sediment mixture. A new method is developed for evaluating the settling velocity of natural sediment particles dispersed in a fluid; it agrees well with the available experimental data. The differences among various empirical expressions are illustrated using the present relationship.