A stochastic approach to modelling solid transport in settling tanks
type: Article
item type: journalArticle
is part of: Water Science and Technology
  type: Journal
  volume: 37
  number: 1
authors: Person
  surname: Chebbo
  given name: G.
authors: Person
  surname: Forgues
  given name: N.
authors: Person
  surname: Lucas-Aiguier
  given name: E.
authors: Person
  surname: Berthebaud
  given name: S.
abstract: 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. (C) 1998 IAWQ. Published by Elsevier Science Ltd.
date: 1998
pages: 277–284