For a traditional stepped spillway, low energy dissipation and cavitation damage may occur when the unit discharge is larger than a limit due to reduced air entrainment in the flow. In the present work, a new type of stepped spillway called hydraulic-jump-stepped spillway (HJSS) was developed, and the air was efficiently entrained into the flow by means of a hydraulic jump in the aeration basin, which was an aeration element of this stepped spillway. Compared with the traditional stepped spillway, various aspects of the hydraulic performance of the HJSS were experimentally investigated, including the flow pattern, energy dissipation, air entrainment characteristics and time-averaged pressure. Physical model results demonstrated that the HJSS achieved a higher energy dissipation, a more favorable air entrainment performance, and a more reasonable pressure distribution. The HJSS successfully increased the unit discharge from 50–60m2/s for a traditional stepped spillway to 101.47 m2/s.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Experimental Investigation of the Hydraulic Performance of a Hydraulic-Jump-Stepped Spillway


    Additional title:

    KSCE J Civ Eng


    Contributors:
    Zhou, Yu (author) / Wu, Jianhua (author) / Ma, Fei (author) / Qian, Shangtuo (author)

    Published in:

    Publication date :

    2021-10-01


    Size :

    8 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





    Baldhill Spillway: Hydraulic Model Investigation

    Fletcher, Bobby P. / United States. Army. Corps of Engineers. St. Paul District. | HENRY – Federal Waterways Engineering and Research Institute (BAW) | 1993

    Free access

    General Spillway Investigation: Hydraulic Model Investigation

    Maynord, Stephen T. | HENRY – Federal Waterways Engineering and Research Institute (BAW) | 1985

    Free access

    Numerical Modeling Investigations of Hydraulic Jump Characteristics over a Chute Spillway

    Sharma, Urvi / Prajwal, D. M. / Pandey, Alok et al. | Springer Verlag | 2024


    Isabella Dam Spillway, Kern River, California: Hydraulic Model Investigation

    Davis, W. Glenn / United States. Army. Corps of Engineers. Sacramento District. | HENRY – Federal Waterways Engineering and Research Institute (BAW) | 1987

    Free access