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The comparison of form drag and profile drag of a wind turbine blade section in pitching oscillation

Soltani, M. R ; Sharif University of Technology | 2009

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  1. Type of Document: Article
  2. Publisher: 2009
  3. Abstract:
  4. Extensive wind tunnel tests have been conducted to investigate the unsteady flow field over and behind a 2D model of a 660 kW wind turbine blade section in pitching motion. The surface pressure and wake dynamic pressure variation at a distance of 1.5 chord length from trailing edge were measured by pressure transducers during several oscillating cycles at 3 reduced frequencies and oscillating amplitudes. Moreover, form drag and linear momentum deficit are extracted and compared at various conditions. The results show that the wake velocity field and surface pressure of the model have similar behavior before and after the airfoil beyond the static stall angle of attack. In addition, the effects of reduced frequency and oscillation amplitudes are discussed
  5. Keywords:
  6. Form drag ; Pitching motion ; Profile drag ; Wind turbine ; 2-D model ; Before and after ; Chord lengths ; Form drag ; Linear momenta ; Oscillating amplitudes ; Oscillating cycle ; Oscillation amplitude ; Pitching motion ; Pitching oscillation ; Profile drag ; Reduced frequency ; Surface pressures ; Trailing edges ; Wake dynamics ; Wake velocity ; Wind tunnel tests ; Wind turbine blades ; Aerodynamics ; Airfoils ; Engines ; Transducers ; Turbomachine blades ; Two dimensional ; Unsteady flow ; Wakes ; Wind power ; Wind tunnels ; Wind turbines ; Drag
  7. Source: World Academy of Science, Engineering and Technology ; Volume 40 , 2009 , Pages 294-301 ; 2010376X (ISSN)
  8. URL: https://publications.waset.org/13865/pdf