Hotwire measurement and numerical analysis of flows around a straight wing vertical axis wind turbine

Yuko Sato, Hironari Okazaki, Tatsuya Shoda, Yu Nishio, Masaya Shigeta, Seiichiro Izawa

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

This paper describes the analysis of flows around a straight wing vertical axis wind turbine. Hotwire measurements in two-dimensional wind tunnel and numerical simulations are conducted. The rotor has two blades, whose airfoil is NACA0012 and the chord length is 0.1 of the rotor diameter. Reynolds number based on the uniform velocity and rotor diameter is 8.0 × 10 4. The tip speed ratio is 2.0. Incompressible Navier-Stokes equation is used for numerical simulation. A rotating coordinate system, which rotates at the same speed of the rotor, is employed. Both the experimental and numerical results are compared. As a result, the velocity fields show good agreements at each rotation angle, and the aerodynamic torque varies according to the flow condition, especially the flow separation.

Original languageEnglish
Pages (from-to)637-646
Number of pages10
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume77
Issue number775
DOIs
Publication statusPublished - 2011

Keywords

  • Flow measurement
  • Numerical simulation
  • Straight wing vertical axis wind turbine

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

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