Numerical investigation of separation control for wind turbine airfoil

Andreas Gross, Sasidhar Kondaraju, Hermann F. Fasel

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

We simulated the flow over the NREL S822 wind turbine airfoil for a chord Reynolds number of 100,000 and an angle of attack of 5deg. These conditions approximately match the blade element conditions at 80% radius of a 2m turbine that is operating at 300rpm. A simulation of the uncontrolled flow with steady approach flow conditions shows flow separation on the suction side which is consistent with University of Illinois at Urbana-Champaign experimental data. We also investigated the effect of a time-dependent approach flow similar to the conditions encountered during yawed turbine operation. Because the blade rotation frequency is much lower than the frequencies associated with the blade aerodynamics we increased the frequency of the approach flow fluctuations. Nevertheless, the time-dependent inflow was found to have little effect on the separated flow. Finally, we investigated separation control using a plasma actuator located near the maximum thickness on the suction side of the airfoil. Pulsed actuation was found to be very efficient and effective as the disturbance input is amplified by the flow.

Original languageEnglish (US)
Title of host publicationASME 2010 4th International Conference on Energy Sustainability, ES 2010
Pages895-904
Number of pages10
DOIs
StatePublished - Dec 1 2010
EventASME 2010 4th International Conference on Energy Sustainability, ES 2010 - Phoenix, AZ, United States
Duration: May 17 2010May 22 2010

Publication series

NameASME 2010 4th International Conference on Energy Sustainability, ES 2010
Volume2

Other

OtherASME 2010 4th International Conference on Energy Sustainability, ES 2010
CountryUnited States
CityPhoenix, AZ
Period5/17/105/22/10

Keywords

  • Active flow control
  • CFD
  • Plasma actuator
  • Wind turbine airfoil
  • Yawed turbine operation

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment

Fingerprint Dive into the research topics of 'Numerical investigation of separation control for wind turbine airfoil'. Together they form a unique fingerprint.

  • Cite this

    Gross, A., Kondaraju, S., & Fasel, H. F. (2010). Numerical investigation of separation control for wind turbine airfoil. In ASME 2010 4th International Conference on Energy Sustainability, ES 2010 (pp. 895-904). (ASME 2010 4th International Conference on Energy Sustainability, ES 2010; Vol. 2). https://doi.org/10.1115/ES2010-90483