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Experimental Investigation of the Flow Over Single and Successive Hills on Smooth and Rough Walls

  • M. BelmahdiEmail author
  • R. Zegadi
  • S. Simoëns
  • S. Bouharati
Article
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Abstract

This paper describes a laboratory study of the behavior of turbulent boundary layers in the presence of two-dimensional hills. Flow measurements of the developing turbulent boundary layer on a single hill and on two successive hills are performed in a wind tunnel. The mean and turbulent velocities are measured by PIV anemometry. The results provide a detailed description of the inner layers upstream and above the hills in the separation recirculation zones. The deduced mean and fluctuating velocity fields are compared for the flow in the presence of a single hill and two successive hills located on smooth and rough walls.

Keywords

PIV two-dimensional hill recirculation turbulence 

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Copyright information

© Pleiades Publishing, Inc. 2018

Authors and Affiliations

  • M. Belmahdi
    • 1
    Email author
  • R. Zegadi
    • 1
  • S. Simoëns
    • 2
  • S. Bouharati
    • 3
  1. 1.Laboratory of Applied Precision Mechanics, Optic and Precision Mechanics InstituteSetif 1 UniversityAlgeriaAlgeria
  2. 2.Fluid Mechanics and Acoustic LaboratoryNational Center for Scientific ResearchLyonFrance
  3. 3.Laboratory of Intelligent SystemsSetif 1 UniversityAlgeriaAlgeria

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