Bed friction effects on the stability of a stationary hydraulic jump in a rectangular upward sloping channel

The issue of the bed friction effect on the stability of a stationary hydraulic jump in a rectangular upward sloping channel is investigated through a combined theoretical and experimental approach. The theoretical stability criterion proposed by Defina and Susin [Phys. Fluids 15, 3883 (2003)] is ge...

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Bibliographic Details
Published in:Physics of fluids (1994) 2008-03, Vol.20 (3)
Main Authors: Defina, Andrea, Susin, Francesca Maria, Viero, Daniele Pietro
Format: Article
Language:English
Subjects:
Applied fluid mechanics
Exact sciences and technology
Fluid dynamics
Fundamental areas of phenomenology (including applications)
Hydrodynamics, hydraulics, hydrostatics
Physics
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Summary:The issue of the bed friction effect on the stability of a stationary hydraulic jump in a rectangular upward sloping channel is investigated through a combined theoretical and experimental approach. The theoretical stability criterion proposed by Defina and Susin [Phys. Fluids 15, 3883 (2003)] is generalized to include rough wall flows. The results of an extensive series of experiments are then presented. The adopted experimental procedure is detailed, and results are compared with theoretical predictions. It is shown that the proposed stability criterion successfully predicts both the stable and unstable behavior of the jump for smooth and rough wall flow, at least in the range of small upward bottom slopes.
ISSN:1070-6631
1089-7666
DOI:10.1063/1.2841622