Optimal estimation of roughness in open-channel flows
Journal Publication ResearchOnline@JCUAbstract
The inverse problem of estimating the open-channel flow roughness is solved using an embedded optimization model. Measurement data for flow depths and discharges at several locations and times are used as inputs to the optimization model. The nonlinear optimization model embeds the finite-difference approximations of the governing equations for unsteady flow in an open channel as equality constraints. The Sequential Quadratic Programming Algorithm is used to solve the optimization model. The performance of the proposed parameter estimation model is evaluated for different scenarios of data availability and noise in flow measurement data. Solution results for illustrative problems indicate the potential applicability of the proposed model.
Journal
Journal of Hydrologic Engineering
Publication Name
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Volume
126
ISBN/ISSN
1943-5584
Edition
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Issue
4
Pages Count
5
Location
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Publisher
American Society of Civil Engineers
Publisher Url
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Publisher Location
N/A
Publish Date
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Url
N/A
Date
N/A
EISSN
N/A
DOI
10.1061/(ASCE)0733-9429(2000)126:4(299)