Comparing Commercial and Transport CFD Models for Secondary Sedimentation
Two types of computational fluid dynamic (CFD) models of activated sludge sedimentation were compared: transport models based on estimated or measured zone settling velocities versus multi-phase models based on theoretical derivation of phase slip velocity from estimated particle size. Suspended solids and fluid velocity profiles predicted by two-dimensional models of both rectangular and circular sedimentation tanks were compared to measured solids and velocity profiles for each type. Results indicate that the transport modeling is much better grounded in empirical research and should be preferred for future modeling. Commercial CFD models typically provide only multi-phase models as standard features; however, they can be used to implement transport modeling through user-defined functions. This approach appears to be the most promising one for future research.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
Document Type: Research Article
Publication date: 2009-01-01
More about this publication?
- Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed. A subscription to the Proceedings of the Water Environment Federation includes access to most papers presented at the annual WEF Technical Exhibition and Conference (WEFTEC) and other conferences held since 2000. Subscription access begins 12 months after the event and is valid for 12 months from month of purchase. A subscription to the Proceedings of the Water Environment Federation is included in Water Environment Federation (WEF) membership.
WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access. Access begins 12 months after the conference or event
- Subscribe to this Title
- Membership Information
- About WEF Proceedings
- WEFTEC Conference Information
- Learn about the many other WEF member benefits and join today
- Ingenta Connect is not responsible for the content or availability of external websites