A stochastic approach to modelling solid transport in settling tanks
| Autor: | Emmanuelle Lucas-Aiguier, Ghassan Chebbo, Stéphane Berthebaud, Nicolas Forgues |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
Suspended solids
Engineering Environmental Engineering business.industry Turbulence Environmental engineering Boundary (topology) Eulerian path Mechanics Physics::Fluid Dynamics symbols.namesake Settling Diffusion process symbols Boundary value problem Diffusion (business) business Water Science and Technology |
| Zdroj: | Water Science and Technology. 37:277-284 |
| ISSN: | 1996-9732 0273-1223 |
| DOI: | 10.2166/wst.1998.0066 |
| Popis: | Dispersion and settling models for suspended solids (SS) in turbulent flow are in the majority of cases Eulerian and deterministic. They simulate SS transport using a convection-diffusion equation. When the diffusion term is supposed not to be zero at the boundary of a settling tank, we show that an alternative (or equivalent) description of the basic convection-diffusion equation for the concentration of suspended solids consists in modelling the particles trajectories as a stochastic diffusion process. This paper has two aims, firstly to present the proposed stochastic approach and secondly to apply this new method to the calculation of a settling tank's efficiency. |
| Databáze: | OpenAIRE |
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