Experimental and Numerical Study of the Wind Tunnel Blockage Effects on the Behaviour of a Horizontal Axis Wind Turbine

  • A. EltayeshEmail author
  • M. Burlando
  • F. Castellani
  • M. Becchetti
Conference paper
Part of the Lecture Notes in Civil Engineering book series (LNCE, volume 27)


This study presents an experimental and numerical investigation of the effects of tunnel blockage, defined as the ratio of the free portion of a wind tunnel cross-section with and without the rotor of a small-size (diameter 2 m) horizontal-axis turbine (HAWT). Experimental measurements were performed on three rotors with different number of blades, namely three, five and six, and different tip speed ratios, in the closed-loop closed-test chamber wind tunnel of the University of Perugia. Numerical wind tunnel simulations were performed at the University of Genoa through a steady-RANS method with SST k-ω turbulence model by means of the CFD solver OpenFOAM. The wind turbine was represented numerically by the actuator disc method. Simulations have been compared to experimental results for validation.


Small-size wind turbines Wind tunnel tests CFD simulations Wind tunnel blockage 


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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • A. Eltayesh
    • 1
    Email author
  • M. Burlando
    • 2
  • F. Castellani
    • 3
  • M. Becchetti
    • 3
  1. 1.Mechanical Engineering Department, Benha Faculty of EngineeringBenha UniversityBenhaEgypt
  2. 2.Department of Civil, Chemical, and Environmental EngineeringUniversity of GenoaGenoaItaly
  3. 3.Department of EngineeringUniversity of PerugiaPerugiaItaly

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