TY - JOUR
T1 - Hotwire measurement and numerical analysis of flows around a straight wing vertical axis wind turbine
AU - Sato, Yuko
AU - Okazaki, Hironari
AU - Shoda, Tatsuya
AU - Nishio, Yu
AU - Shigeta, Masaya
AU - Izawa, Seiichiro
PY - 2011
Y1 - 2011
N2 - 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.
AB - 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.
KW - Flow measurement
KW - Numerical simulation
KW - Straight wing vertical axis wind turbine
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U2 - 10.1299/kikaib.77.637
DO - 10.1299/kikaib.77.637
M3 - Article
AN - SCOPUS:84859602523
SN - 0387-5016
VL - 77
SP - 637
EP - 646
JO - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
JF - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
IS - 775
ER -