Author(s): J. P. Martín Vide

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Abstract: The classification of rapidly varied unsteady flow is reviewed from continuity and momentum equations. Non-dimensional equations are proposed for analysing the combinations of sub- or supercritical regimes in the up- and downstream flow in a surge. A continuous profile or an alternative surge combination is found when Fr>2. It is shown that a simpler approach of the roll wave phenomenon can be obtained from a finite momentum equation.

DOI: https://doi.org/10.1080/00221689209498933

Year: 1992