Computationally implicit hydraulics for real-time combined sewer overflow modeling and decision support

Andrea Zimmer, Arthur Schmidt, Avi Ostfeld, Barbara S Minsker

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Large-scale combined sewer systems necessitate accurate hydraulic models with a low computational requirements to depict combined sewer overflows (CSOs) in real-time. A hydraulic model is proposed that incorporates the mass and momentum equations into a series of look-up tables. Flow that enters the interceptors is routed downstream based on a hydraulic performance graph (HPG) which conserves momentum, and a volumetric performance graph (VPG) which conserves mass, established for each conduit. Weirs and sluice gates that control water distribution throughout the combined sewer system are also represented by look-up tables created off-line. During real-time computations, referencing the look-up tables is faster than computing the full equations. The model includes accurate sewer and deep tunnel components imported from Arc-GIS, and is shown to emulate EPA SWMM 5.0 dynamic wave results on a faster time scale. Calibration and timing results show that the model may be successfully applied to evaluate potential operating scenarios more quickly than SWMM.

Original languageEnglish (US)
Title of host publicationWorld Environmental and Water Resources Congress 2012
Subtitle of host publicationCrossing Boundaries, Proceedings of the 2012 Congress
Pages295-304
Number of pages10
DOIs
StatePublished - 2012
EventWorld Environmental and Water Resources Congress 2012: Crossing Boundaries - Albuquerque, NM, United States
Duration: May 20 2012May 24 2012

Publication series

NameWorld Environmental and Water Resources Congress 2012: Crossing Boundaries, Proceedings of the 2012 Congress

Other

OtherWorld Environmental and Water Resources Congress 2012: Crossing Boundaries
Country/TerritoryUnited States
CityAlbuquerque, NM
Period5/20/125/24/12

ASJC Scopus subject areas

  • Water Science and Technology

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