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Open Access

ARTICLE

Study of a Hydraulic Jump in an Asymmetric Trapezoidal Channel with Different Sluice Gates

Bouthaina Debabeche1,2,*, Sonia Cherhabil3
1 Research Laboratory in Civil Engineering, Hydraulics, Sustainable Development and Environment (LARGHYDE), University of Biskra, Biskra, 7000, Algeria
2 Faculty of Sciences Applied Sciences, Liege University, Liege, 4000, Belgium
3 Underground and Surface Hydraulics Research Laboratory (LARHYSS), Biskra, 7000, Algeria
* Corresponding Author: Bouthaina Debabeche. Email: email

Fluid Dynamics & Materials Processing https://doi.org/10.32604/fdmp.2024.047403

Received 04 November 2023; Accepted 06 February 2024; Published online 19 March 2024

Abstract

In this study, the main properties of the hydraulic jump in an asymmetric trapezoidal flume are analyzed experimentally, including the so-called sequent depths, characteristic lengths, and efficiency. In particular, an asymmetric trapezoidal flume with a length of 7 m and a width of 0.304 m is considered, with the bottom of the flume transversely inclined at an angle of m = 0.296 and vertical lateral sides. The corresponding inflow Froude number is allowed to range in the interval (1.40 < F1 < 6.11). The properties of this jump are compared to those of hydraulic jumps in channels with other types of cross-sections. A relationship for calculating hydraulic jump efficiency is proposed for the considered flume. For F1 > 5, the hydraulic jump is found to be more effective than that occurring in triangular and symmetric trapezoidal channels. Also, when mes > 8 and > 5, the hydraulic jump in the asymmetrical trapezoidal channel downstream of a parallelogram sluice gate is completely formed as opposed to the situation where a triangular sluice is considered.

Keywords

Asymmetric trapezoidal channel; characteristic lengths; efficiency; Froude; hydraulic jump; sequent depths; sluice gate

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