Computational and Experimental Study of Surcharged Flow at a Combining Sewer Junction
Publication: Journal of Hydraulic Engineering
Volume 134, Issue 6
Abstract
Combining sewer junctions with a lateral inflow at angle are commonly used in our sewer systems. A computational fluid dynamics (CFD) model based on Ansys CFX 10.0 was established to simulate fully surcharged flow at a combining sewer junction. The model was carefully assessed by comparing its results with the measurements of detailed physical experiments. Good agreement was obtained between results of the computational model and of the laboratory experiments. The computational model was proved to be capable of simulating surcharged combining junction flow in the aspects of water depth, energy losses, velocity distributions, and turbulence. The verified CFD model was also used to investigate air entrainment and effects of the size of the junction chamber on the flow. Such CFD models can be used to optimize the design of sewer junctions and will also be useful in studying sediment transport at sewer junctions.
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Acknowledgments
The writers would like to thank Mr. Rick Carnduff and Dr. Manas Shome of Stantec Consulting, Mr. Ian Morley of the City of Calgary for introducing us to this interesting project. The writers are also thankful to Mr. Perry Fedun for building the models and Mr. Matthew McCrank for help with the experimental work. Financial support from the NSERC, the City of Calgary, and the City of Edmonton is gratefully acknowledged.
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Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 134 • Issue 6 • June 2008
Pages: 688 - 700
Copyright
© 2008 ASCE.
History
Received: Mar 31, 2006
Accepted: Sep 14, 2007
Published online: Jun 1, 2008
Published in print: Jun 2008
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