Design of Circular Urban Storm Sewer Systems Using Multilinear Muskingum Flow Routing Method
Publication: Journal of Hydraulic Engineering
Volume 129, Issue 11
Abstract
In this study, a multilinear Muskingum method is presented for hydrologic routing through circular conduits. In order to increase accuracy, the reference discharge is assumed to be a nonlinear function of conduit diameter, Manning coefficient, bed slope, and peak discharge of the inflow hydrograph. The reference discharge function has been determined using a nonlinear regression technique. Flow depths are computed at every time step by solving the continuity equation using an implicit finite difference scheme. Many storm hydrographs were routed through circular conduits of various sizes by the proposed model. The calculated routed hydrographs and water surface profiles indicate close agreement with those obtained by solving Saint Venant equations. Using this method, a branched urban sewer system was designed. This indicates that the method can be easily implemented for design purposes because of its simplicity, accuracy, and computational efficiency.
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Published In
Journal of Hydraulic Engineering
Volume 129 • Issue 11 • November 2003
Pages: 832 - 838
Copyright
Copyright © 2003 American Society of Civil Engineers.
History
Received: Jul 2, 2001
Accepted: Apr 9, 2003
Published online: Oct 15, 2003
Published in print: Nov 2003
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