Optimal estimation of roughness in open-channel flows

Ramesh, R., Datta, Bithin, Bhallamudi, S. Murty, and Narayana, A. (2000) Optimal estimation of roughness in open-channel flows. Journal of Hydrologic Engineering, 126 (4). pp. 299-303.

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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.

Item ID: 21614
Item Type: Article (Research - C1)
ISSN: 1943-5584
Date Deposited: 26 Jun 2012 04:40
FoR Codes: 09 ENGINEERING > 0905 Civil Engineering > 090509 Water Resources Engineering @ 50%
09 ENGINEERING > 0907 Environmental Engineering > 090799 Environmental Engineering not elsewhere classified @ 50%
SEO Codes: 96 ENVIRONMENT > 9609 Land and Water Management > 960999 Land and Water Management of Environments not elsewhere classified @ 100%
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