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You are here : eLibrary : IAHR World Congress Proceedings : 32nd Congress - Venice (2007) : THEME B: Data Acquisition and Processing For Scientific Knowledge and Public Awareness. : A boussinesq approximation for open channel flow
A boussinesq approximation for open channel flow
Author : John D. Fenton and Yebegaeshet T. Zerihun
The one-dimensional long wave equations are used throughout open channel hydraulics as a simple model of complicated reality. Nevertheless they suffer from an important limitation, that if the flow ever becomes critical, they break down. Boussinesq in 1877 developed a nonhydrostatic approximation that leads to a relatively simple correction with the ability to describe both sub- and super-critical flow and transitions between them. That equation, which might have formed the basis of open-channel hydraulics, has instead been substantially ignored. This paper develops a similar approach to Boussinesq, but for channels of greater generality. When compared with experiment it is found to provide a good model for flows that pass through critical, in flumes, over weirs and embankments, and in undular bores.
File Size : 147,555 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 32nd Congress - Venice (2007)
Article : THEME B: Data Acquisition and Processing For Scientific Knowledge and Public Awareness.
Date Published : 01/07/2007
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