Abstract
Most concentration distribution models are based on the advection diffusion equation for two-dimensional (2D) channel flow. These models may or may not incorporate hindered settling based on the cross-sectional averaged spatial volumetric concentration. These models also use a diffusivity based on the turbulent momentum diffusivity, sometimes corrected for the particle diameter (Kaushal & Tomita (2000)). The result is a 2D concentration profile. To make this applicable for pipe flow, the integrated concentration profile must match the cross-sectional averaged spatial volumetric concentration, which requires a correction. Still the result is based on a constant hindered settling velocity, which is not correct considering the concentration over the vertical coordinate is not a constant. An iterative method has been developed to correct the concentration profile for the local hindered settling velocity. About 4 iterations are necessary to find the resulting concentration profile.
| Original language | English |
|---|---|
| Title of host publication | Proceedings Dredging Summit and Expo 2017 |
| Editors | Donald F. Hayes |
| Place of Publication | Bonsall, CA, USA |
| Publisher | Western Dredging Association |
| Pages | 189-203 |
| Publication status | Published - 2017 |
| Event | WEDA Dredging Summit & Expo 2017 - Vancouver, Canada Duration: 26 Jun 2017 → 29 Jun 2017 |
Conference
| Conference | WEDA Dredging Summit & Expo 2017 |
|---|---|
| Country/Territory | Canada |
| City | Vancouver |
| Period | 26/06/17 → 29/06/17 |
Keywords
- Dredging
- Newtonian settling slurry transport
- concentration profile
