International Journal of Fluid Machinery and Systems

한국유체기계학회 (Korean Society for Fluid machinery)
권호 표지
DOI QR코드

DOI QR Code

Study of Flow Field and Pressure Distribution on a Rotor Blade of HAWT in Yawed Flow Conditions

  • Maeda, Takao (Division of Mechanical Engineering, Mie University) ;
  • Kamada, Yasunari (Division of Mechanical Engineering, Mie University) ;
  • Okada, Naohiro (Division of Mechanical Engineering, Mie University) ;
  • Suzuki, Jun (Division of Mechanical Engineering, Mie University)
  • 투고 : 2010.06.04
  • 심사 : 2010.11.30
  • 발행 : 2010.12.31
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

This paper describes the flow field and the blade pressure distribution of a horizontal axis wind turbine in various yawed flow conditions. These measurements were carried out with 2.4m-diameter rotor with pressure sensors and a 2-dimensional laser Doppler velocimeter for each azimuth angle in a wind tunnel. The results show that aerodynamic forces of the blade based on the pressure measurements change according to the local angle of attack during rotation. Therefore the wake of the yawed rotor becomes asymmetric for the rotor axis. Furthermore, the relations between aerodynamic forces and azimuth angles change according to tip speed ratio. By the experimental analysis, the flow field and the aerodynamic forces for each azimuth angle in yawed flow condition were clarified.

키워드

참고문헌

  1. “The 14th edition of International Wind Power Development World Market Update 2008 Forecast 2009-2013,” BTM.
  2. Imamura, H. et al. “Study on Unsteady Flow around a HAWT Rotor by Panel Method (Calculation of yawed inflow effects and evaluation of angle of around blade based on pressure distribution),” Transactions of the Japan Society of Mechanical Engineers, Series B, Vol. 71, No.705, 2005, pp. 154-161. https://doi.org/10.1299/kikaib.71.154
  3. Wouter, H. et al. “Measurement and Modelling of Tip Vortex Paths in the Wake of a HAWT Under Yawed Flow Conditions,” Journal of Solar Energy Engineering, Vol. 127, 2005, pp. 456-463. https://doi.org/10.1115/1.2037092
  4. “IEA Wind Annex XX: HAWT Aerodynamics and Models from Wind Tunnel Measurements,” NREL, 2008, TP-500-43508.
  5. Maeda, T. et al. “Experimental Study on Flow around Blades of Horizontal Axis Wind Turbine in Wind Tunnel,” Transactions of the Japan Society of Mechanical Engineers, Series B, Vol. 71, No. 701, 2005, pp. 171-176.
  6. Maeda, T. et al. “Experimental Study on Flow around Blades of Horizontal Axis Wind Turbine in Wind Tunnel (2nd Report Studies on the flow around blade based on pressure distribution),” Transactions of the Japan Society of Mechanical Engineers, Series B, Vol. 71, No. 705, 2005, pp. 1383-1389.