This study aims to examine and analyze the experimental approach of controlled hydraulic jump threshold, moving in a channel profile 'U' bottom rough, linking the different characteristics of projection, showing the effect of roughness of the bottom.
The purpose of this study is to study experimentally the hydraulic jump evolving in a symmetric trapezoidal channel with a positive slope, requires the use of an experimental protocol, and to find experimental relations linking the characteristics of the formed projection. The experimental study investigated the variation of the relative height S = s / h 1 of the threshold as a function of the Froude F1 number of the incident flow, for five distinct values of the slope of the channel.
This study has for objective to study the theoretical relation of the hydraulic jump by sill, evolving in an U-shaped channel, with a rough bed. Functional relations, in nondimensional form, relating the jump characteristics, seeming the effect of the bed's roughness, are obtained. A comparative study with the hydraulic jump in U-shaped channel, with smooth bed is proposed.
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