Hotwire Measurement and Numerical Analysis of Flows around a Straight Wing Vertical Axis Wind Turbine

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 n...

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Bibliographic Details
Published inNihon Kikai Gakkai rombunshuu. B hen Vol. 77; no. 775; pp. 637 - 646
Main Authors SATO, Yuko, OKAZAKI, Hironari, SHODA, Tatsuya, NISHIO, Yu, SHIGETA, Masaya, IZAWA, Seiichiro
Format Journal Article
LanguageEnglish
Japanese
Published The Japan Society of Mechanical Engineers 2011
Subjects
Flow Measurement
Numerical Simulation
Straight Wing Vertical Axis Wind Turbine
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Summary: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 × 104. 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.
ISSN:0387-5016
1884-8346
DOI:10.1299/kikaib.77.637