Comparative Study of Various Methods for Computation of Energy Dissipation over Stepped Spillway.

Attia, M.; Ahmed El-Gamal, Mahmoud Mohamed Abd El-Aziz

doi:10.21608/bfemu.2021.148673

Comparative Study of Various Methods for Computation of Energy Dissipation over Stepped Spillway.

Document Type : Research Studies

Authors

¹ Water & Water Structures Engineering Department., Faculty of Engineering., Zagazig University., Zagazig., Egypt.

² Irrigation & Hydraulic Engineering Department., Faculty of Engineering., El-Mansoura University., Mansoura., Egypt.

10.21608/bfemu.2021.148673

Abstract

Stepped spillways have become popular with the method of construction adopted for roller Compacted concrete dams. The steps provided on the surface of open spillways help to increase the rate of energy dissipation taking place on the spillway face to reduce the size of stilling basin generally provided at the toe of spillway. The regime of flow over stepped spillway can be either skimming or nappe type. This paper describes the various methods available for computation of energy dissipation over stepped spillway for both the regimes. The results obtained by these methods are compared with the available experimental data, which would help in selecting more accurate method for computation of energy dissipation.

Main Subjects