OPTIMAL ESTIMATION OF ROUGHNESS IN OPEN-CHANNEL FLOWS. TECHNICAL NOTE
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.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/oclc/8672558
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Corporate Authors:
American Society of Civil Engineers
1801 Alexander Bell Drive
Reston, VA United States 20191-4400 -
Authors:
- RAMESH, R
- Datta, B
- Bhallamudi, S M
- Narayana, A
- Publication Date: 2000-4
Language
- English
Media Info
- Features: Appendices; Figures; References; Tables;
- Pagination: p. 299-303
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Serial:
- Journal of Hydraulic Engineering
- Volume: 126
- Issue Number: 4
- Publisher: American Society of Civil Engineers
- ISSN: 0733-9429
- Serial URL: https://ascelibrary.org/journal/jhend8
Subject/Index Terms
- TRT Terms: Algorithms; Approximation (Mathematics); Channel flow; Constraints; Depth; Estimating; Finite differences; Flow; Mathematical models; Open channels; Optimization; Performance evaluations; Programming (Mathematics); Roughness; Unsteady flow
- Subject Areas: Highways; Hydraulics and Hydrology; I26: Water Run-off - Freeze-thaw;
Filing Info
- Accession Number: 00794055
- Record Type: Publication
- Files: TRIS
- Created Date: Jun 23 2000 12:00AM