Hindered settling with an apparent particle diameter concept |
| |
| Institution: | 1. School of Ocean Sciences, Bangor University, Menai Bridge, Anglesey LL59 5AB, UK;2. Departmento de Oceanografía Física, Centro de Investigación Científica y Educación Superior de Ensenada (CICESE), Carretera Ensenada-Tijuana No. 3918, Zona Playitas, C. P. 22860 Ensenada, B.C., Mexico;3. Centre for Applied Marine Sciences, Bangor University, Menai Bridge, Anglesey LL59 5AB, UK;1. Jiangsu Key Laboratory of Coast Ocean Resources Development and Environment Security, Hohai University, Nanjing, China;2. School of Environment, University of Auckland, Auckland, New Zealand;3. UNESCO-IHE, Delft, Netherlands;4. Deltares, Delft, Netherlands |
| |
| Abstract: | In this work a new expression has been developed to predict the settling velocity of a sediment particle which is dispersed in a sediment-fluid mixture during a turbulent flow. A concept of apparent particle diameter has been introduced and is defined by the diameter of the spherical volume in which the particle can move randomly after collision with other particles in suspension. The effect of suspension concentration is studied on the mass density of the sediment-fluid mixture. It has been shown that the settling velocity of sediment particle in a sediment-fluid mixture is a function of different characteristics of the sediment particle such as settling velocity in clear fluid, suspension concentration, relative mass density and Reynolds number. The model has shown good agreement when compared with previously published experimental data and it’s prediction accuracy is superior than the other existing models. |
| |
| Keywords: | Apparent particle diameter Mass density Hindered settling Sediment concentration Settling velocity |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
