Dual Multilevel Urban Drainage Model
Publication: Journal of Hydraulic Engineering
Volume 131, Issue 9
Abstract
In urban areas, when heavy rains occur, the discharge capacity of sewers is usually unable to transport the effective rainfall reaching the streets. When the runoff flow rate exceeds the capacity of the storm sewer system, the excess flow is conveyed through the street network as overland flow. A dual model is proposed for modeling the system as a double network, formed by an upper network of open channels (street gutters) and a lower network of closed conduits (sewer pipes). What is new in this model is its capacity to take into account the hydrodynamic relationship between the flows in the upper and lower networks. The model is applied to computing the response of a real monitored basin; the historical flow rates measured during a first rainfall event are used to calibrate the model, which is then validated using the simulation of two other measured events.
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Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 131 • Issue 9 • September 2005
Pages: 748 - 754
Copyright
© 2005 ASCE.
History
Received: Aug 23, 2002
Accepted: Dec 22, 2004
Published online: Sep 1, 2005
Published in print: Sep 2005
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