Abstract
In this study, the hydraulic jump characteristics were studied experimentally over six triangular corrugated beds in a rectangular cross section flume. A total number of 42 tests were carried out for Froude numbers 6.1 to 13.1 in low stage of jump. In all tests, the main characteristics of hydraulic jump were measured. The results showed that the corrugated bed caused the conjugate depths of the jump and the hydraulic jump length to be reduced by 25% and 54.7%, respectively, compared to those of smooth bed. The obtained shear stress coefficient for corrugated bed is about 8.5 times of that for smooth bed. The effect of the relative corrugation heights on the jump characteristics was not found to be significant. Finally, results obtained from this study showed that the effect of the shape was almost insignificant. Furthermore, no specific corrugated sheet could be chosen to simultaneously reduce the tailwater depth and the jump length.
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