Case Study: Numerical Evaluation of Hydraulic Transients in a Combined Sewer Overflow Tunnel System
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Volume 133, Issue 10
Abstract
The potential for hydraulic transients in the West Area Combined Sewer Overflow Tunnel System of the City of Atlanta was investigated by numerical modeling. Different design alternatives were evaluated to mitigate pressure oscillations, backflows, and flooding during storm events. A dynamic transient model was developed to simulate the transition from gravity flow to pressurized flow that would occur during a storm event. The model is able to simulate pressurization with pipe-filling bore or gradual-flow regime transition. Numerical results compare well with experimental data on single pipe flows. Following a brief description of the model, the paper discusses the pressure transients simulated during the filling of the tunnels for both the original and improved designs.
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Information
Published In
Journal of Hydraulic Engineering
Volume 133 • Issue 10 • October 2007
Pages: 1103 - 1110
Copyright
© 2007 ASCE.
History
Received: Jul 6, 2005
Accepted: Apr 10, 2007
Published online: Oct 1, 2007
Published in print: Oct 2007
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