Journal of the Korean Society of Visualization (한국가시화정보학회지)

The Korean Society of Visualization (한국가시화정보학회)
권호 표지
DOI QR코드

DOI QR Code

Investigation of wind-turbine wake characteristics in ideal turbulent inflow

이상 난류 조건에서의 풍력 터빈 후류 특성 연구

  • Na, Jisung (Department of Mechanical Engineering, Yonsei University) ;
  • Ko, Seungchul (Department of Mechanical Engineering, Yonsei University) ;
  • Lee, Joon Sang (Department of Mechanical Engineering)
  • Received : 2017.12.09
  • Accepted : 2017.12.28
  • Published : 2017.12.31
Download PDF
⟨ Previous Next ⟩

Abstract

In this study, we investigate the wake characteristics in laminar inflow and two different turbulent inflow cases. To solve the flow with wind turbines and its wake, we use large eddy simulation (LES) technique with actuator line method (ALM) and turbulent inflow of Turbsim. We perform the quantitative analysis of velocity deficit and turbulent intensity in laminar inflow case and turbulent inflow case with different turbulent intensity. In turbulent inflow, unsteady strong wake recovery which is highly fluctuated in time. Normalized power in turbulent inflow case is also highly fluctuated with unsteady wake recovery, while that in laminar inflow has quasi steady characteristic in power generation.

Keywords

References

  1. Park J., Basu S., Manuel L., 2014, "Large-eddy simulation of stable boundary layer turbulence and estimation of associated wind turbine loads", Wind Energy, Vol. 17(3), pp. 359-384. https://doi.org/10.1002/we.1580
  2. Na, J. S., Koo, E., Munoz-Esparza, D., Jin, E. K., Linn., R., Lee, J. S., 2016, "Turbulent kinetics of a large wind farm and their impact in the neutral boundary layer.", Energy, Vol. 95, pp. 79-90. https://doi.org/10.1016/j.energy.2015.11.040
  3. Vermeer L. J., Sorensen J. N., Crespo A., 2003, "Wind turbine wake aerodynamics", Prog. Aerosp. Sci. Vol. 39(6), pp. 467-510. https://doi.org/10.1016/S0376-0421(03)00078-2
  4. Na, J. S., Koo, E., Jin, E. K., Linn, R., Ko, S. C., Munoz‐Esparza, D., Lee, J. S., 2017, "Large‐eddy simulations of wind‐farm wake characteristics associated with a low‐level jet", Wind Energy.
  5. Dorenkamper M., Witha B., Steinfeld G., Heinemann D., Kuhn M., 2015, "The impact of stable atmospheric boundary layers on wind-turbine wakes within offshore wind farms." J. Wind Eng. Ind. Aerodyn., Vol. 144, pp. 146-153. https://doi.org/10.1016/j.jweia.2014.12.011
  6. Allaerts, D., Meyers, J., 2015, "Large eddy simulation of a large wind-turbine array in a conventionally neutral atmospheric boundary layer", Physics of Fluids, Vol. 27(6), 065108. https://doi.org/10.1063/1.4922339
  7. Jonkman J., Butterfield S., Musial W., Scott G., 2009, "Definition of a 5-MW reference wind turbine for offshore system development", National Renewable Energy Laboratory.
  8. Jonkman, B. J., 2009, "TurbSim user's guide: Version 1.50", National Renewable Energy Laboratory.
  9. Stevens, B., Duan, J., McWilliams, J. C., Münnich, M., & Neelin, J. D, 2002, "Entrainment, Rayleigh friction, and boundary layer winds over the tropical Pacific", Journal of climate, Vol. 15(1), 30-44. https://doi.org/10.1175/1520-0442(2002)015<0030:ERFABL>2.0.CO;2