A simple theoretical criterion to predict stability of a stationary hydraulic jump in a rectangular channel is presented. It is shown that stability condition depends on the Froude number of the flow, as well as on the bottom slope and friction along the channel. In particular, it is found that in an upward sloping channel the jump may either be unstable ~i.e., if the jump is slightly displaced from its equilibrium location, then it moves further away from it! or stable ~i.e., it returns to its original location!. This result improves previous theoretical findings reported in the literature.

Stability of a stationary hydraulic jump in an upward sloping channel

DEFINA, ANDREA;SUSIN, FRANCESCA MARIA
2003

Abstract

A simple theoretical criterion to predict stability of a stationary hydraulic jump in a rectangular channel is presented. It is shown that stability condition depends on the Froude number of the flow, as well as on the bottom slope and friction along the channel. In particular, it is found that in an upward sloping channel the jump may either be unstable ~i.e., if the jump is slightly displaced from its equilibrium location, then it moves further away from it! or stable ~i.e., it returns to its original location!. This result improves previous theoretical findings reported in the literature.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11577/2429091
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