Abstract
The present study aimed at highlighting the influence of turbulence on the dynamic stall characteristics of the Horizontal Axis Wind Turbine (HAWT) with wind tunnel experiments. UMY02-T01-26 airfoil that could efficiently perform at a high Reynolds number had been designed. The turbulence flow was generated by turbulence grids. To experimentally characterize these flows, HAWT blade surface pressures which were used to investigate the dynamic stall phenomenon were acquired by multiport pressure devices. The pressure distribution acting on the blade surface, lift coefficient and drag coefficient against the angle of attack were examined based on different turbulence intensities. For the angle of attack of α = 13°, the results indicated that in the increasing direction of the angle of attack, the lift coefficients of dynamic state showed larger values increase than those in the static state. At dynamic stall, in the case of Re = 1.5 × 105, the flow was separated at the leading edge of x/c > 0.1 in the increasing direction of the angle of attack. In the case of Re = 2.0 × 105, the range of the pressure hysteresis loop became narrower than that in the turbulence intensity of Re = 1.5 × 105.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
