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Journal of Hydrodynamics

, Volume 29, Issue 2, pp 322–331 | Cite as

The effects of step inclination and air injection on the water flow in a stepped spillway: A numerical study

  • Khadidja Kherbache
  • Xavier Chesneau
  • Belkacem Zeghmati
  • Stéphane Abide
  • Saâdia Benmamar
Article

Abstract

In this work, we perform a numerical study of a water flow over a stepped spillway. This flow is described by the Reynolds averaged Navier-Stokes equation (RANS) associated with the turbulence k-ε model. These equations are solved using a commercial software based on the finite volume scheme and an unstructured mesh. The air-water flow was modeled using volume of fluid (VOF) and multiphasic methods. The characteristics of the flow were investigated including the total pressure, the velocity profile, etc.. We analyze the effects on the flow structure of the steps and countermarch inclination, the air injection through the countermarch into the water flow and the dynamics water discharges. Results show that the inclination of the countermarch relative to the vertical and the air injection into the water flow increase the total pressure in the neighbourhood of the steps.

Key words

Stepped spillway turbulence air-water air injection volume of fluid (VOF) method multiphasic method 

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Copyright information

© China Ship Scientific Research Center 2017

Authors and Affiliations

  • Khadidja Kherbache
    • 1
    • 2
  • Xavier Chesneau
    • 1
  • Belkacem Zeghmati
    • 1
  • Stéphane Abide
    • 1
  • Saâdia Benmamar
    • 2
  1. 1.LAboratoire de Mathématiques et de PhySique (LAMPS) EA4217Université de Perpignan Via Domitia (UPVD)PerpignanFrance
  2. 2.Ecole Nationale PolytechniqueLaboratoire de Recherche des Sciences de l’eauAlgerAlgérie

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