CFD Modeling of Solid Separation in Three Combined Sewer Overflow Chambers
Publication: Journal of Environmental Engineering
Volume 135, Issue 9
Abstract
The knowledge of solid behavior in combined sewer overflow (CSO) chambers is a great challenge for the protection of receiving watercourses. Moreover, great attention must be given to the occurrence of deposits on the bed of the chamber because they may lead to operation problems. In this paper, we investigate the capability of a particle tracking approach to determine the solid separation in CSO chambers. This is done by comparing simulations and experimental data collected in three small-scale models, as reported by Kehrwiller 1995. The trap, reflect, and bed shear stress (BSS) boundary conditions are compared. We propose to use the Shields relationship for evaluating the critical BSS. Finally, we propose a methodology for predicting the solid separation in CSO chambers using computational fluid dynamics.
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Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 135 • Issue 9 • September 2009
Pages: 776 - 787
Copyright
© 2009 ASCE.
History
Received: Feb 7, 2008
Accepted: Oct 4, 2008
Published online: Feb 20, 2009
Published in print: Sep 2009
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