Optimization Modeling for Sedimentation in Alluvial Rivers
Publication: Journal of Water Resources Planning and Management
Volume 121, Issue 3
Abstract
Mathematical models are developed for determining optimum reservoir releases in order to minimize the aggradation and degradation in downstream river reaches. The physical system is composed of a reservoir-river interaction in which the releases from the reservoir comprise the inflows for the downstream river reach. A finite-difference scheme of sediment routing is adopted to determine the changes of bed profile along the river. The nonlinear programming problem is solved using a nonlinear programming solver, a dynamic programming (DP) procedure, and a differential dynamic programming (DDP) procedure. Four sediment transport functions have been used in order to evaluate and test the validity of the formulation. Chance-constrained formulations are also presented to consider the uncertainties of sediment transport parameters used in the modeling. A rectangular channel is used for the purpose of illustrating the procedure, which is a preliminary step toward the application of the methodology to a large existing system.
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Information & Authors
Information
Published In
Journal of Water Resources Planning and Management
Volume 121 • Issue 3 • May 1995
Pages: 251 - 259
Copyright
Copyright © 1995 American Society of Civil Engineers.
History
Published online: May 1, 1995
Published in print: May 1995
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