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International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.9

ISSN Imprimir: 2152-5102
ISSN En Línea: 2152-5110

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International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v35.i4.20
pages 318-325

Theoretical Study of the Forced Hydraulic Jump by Positive Step in a Triangular Channel

Mahmoud Debabeche
Research Laboratory in Subterranean & Surface Hydraulics, Department of Hydraulic, University of Biskra, Algeria
Moussa Lakehal
Department of Hydraulic, University of Oum El Bouaghi, Algeria
Naim Mansri
University of Biskra, Biskra, Algeria
Bachir Achour
Research Laboratory in Subterranean & Surface Hydraulics, Department of Hydraulics, University of Biskra, Biskra, Algeria

SINOPSIS

The sequent depths ratio of a forced hydraulic jump by positive step, evolving in a horizontal triangular channel of 90° central angle, is theoretically analyzed. A general relationship is obtained for the sequent depths ratio as function of the inflow Froude number and the relative step height. Experimental data are used to correct the theoretical obtained relationship. The positive step gets the stability of the jump, its efficiency and compactness. The relationship obtained is recommended of designing irrigation ditches.


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