| Abstract: | Long-wave motion in open channels can be expressed mathematically by the one-dimensional de Saint Venant equations describing conservation of fluid mass and momentum. Numerical simulation models, based on either depth/velocity or water-level/discharge dependent-variable formulations of these equations, are typically used to simulate unsteady open-channel flow. However, the implications and significance of selecting either dependent-variable form - on model development, discretization and numerical solution processes, and ultimately on the range-of-application and simulation utility of resulting models - are not well known. Results obtained from a set of numerical experiments employing two models - one based on depth/velocity and the other on water-level/discharge equation formulations - reveal the sensitivity of the two equation sets to various channel properties and dynamic flow conditions. In particular, the effects of channel gradient, channel width-to-depth ratio, flow-resistance coefficient, and flow unsteadiness are analyzed and discussed. |
| Genre: | Conference Paper |
| ProdID: | 70018801 |
| Citation Author: | Baltzer, Robert, A.; Schaffranek, Raymond, W.; Lai, Chintu |
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| Citation Editor: | Espey William H.Combs Phil G. |
| Citation End Page: | 144 |
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| Citation Language: | English |
| Citation Larger Work Title: | International Water Resources Engineering Conference - Proceedings |
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| Citation Number Of Pages: | 6 |
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| Citation Publisher: | ASCE |
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| Citation Search Results Text: | Robustness of de Saint Venant equations for simulating unsteady flows; 1995; Conference Paper; International Water Resources Engineering Conference - Proceedings; Baltzer, Robert, A.; Schaffranek, Raymond, W.; Lai, Chintu |
| Citation Start Page: | 139 |
| Citation Volume: | 1 |
| Citation Year: | 1995 |
| Type: | citation/reference |
| Text: | Robustness of de Saint Venant equations for simulating unsteady flows; 1995; Conference Paper; International Water Resources Engineering Conference - Proceedings; Baltzer, Robert, A.; Schaffranek, Raymond, W.; Lai, Chintu |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Sun, 1 Jan 1995 00:00 -0600 |
| Publisher: | ASCE |
