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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| Format: | Article |
| Language: | English |
| Published: |
2012
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| Online Access: | https://hdl.handle.net/10356/94518 http://hdl.handle.net/10220/7649 |
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| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | 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. |
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