Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : November 11, 2020 - November 13, 2020
The characteristics of wind direction of horizontal axis cylinder blade wind turbine driven by longitudinal vortex was examined. The wind tunnel experiments were carried on the determination of the effect of the angle between the wind turbine rotation axis and the free stream on the power coefficient. It is found that there is a critical yaw angle where the power coefficient drops sharply. For the lift force generated by the longitudinal vortex, the peripheral velocity of the cylinder blade and the relative angle of attack formed by the free stream are important. The distribution of the torque as a function of the rotation angle of the blade was evaluated. It is clarified the fluid force acted on the blade related with the relative attack angle, but it was caused a region of the rotation angle where the necklace vortex was varnished.
