| Abstract: | Formulation of a one-dimensional model for simulating unsteady flow in a single open-channel reach or in a network of interconnected channels is presented. The model is both general and flexible in that it can be used to simulate a wide range of flow conditions for various channel configurations. It is based on a four-point (box), implicit, finite-difference approximation of the governing nonlinear flow equations with user-definable weighting coefficients to permit varying the solution scheme from box-centered to fully forward. Unique transformation equations are formulated that permit correlation of the unknowns at the extremities of the channels, thereby reducing coefficient matrix and execution time requirements. Discharges and water-surface elevations computed at intermediate locations within a channel are determined following solution of the transformation equations. The matrix of transformation and boundary-condition equations is solved by Gauss elimination using maximum pivot strategy. Two diverse applications of the model are presented to illustrate its broad utility. (USGS) |
| Genre: | USGS Numbered Series |
| ProdID: | 38500 |
| Citation Author: | Schaffranek, R. W. |
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| Citation Language: | ENGLISH |
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| Citation Phsyical Description: | 11 p. |
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| Citation Series: | Professional Paper |
| Citation Series Code: | PP |
| Citation Series Number: | 1384 |
| Citation Search Results Text: | Flow model for open-channel reach or network; 1987; PP; 1384; Schaffranek, R. W. |
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| Citation Year: | 1987 |
| Type: | citation/reference |
| Text: | Flow model for open-channel reach or network; 1987; PP; 1384; Schaffranek, R. W. |
| URL (THUMBNAIL): | http://pubs.usgs.gov/pp/1384/report-thumb.jpg |
| URL (DOCUMENT): | http://pubs.usgs.gov/pp/1384/report.pdf |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
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