Investigation of vortex generators for augmentation of wind turbine power performance Metadata

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  • Main Title Investigation of vortex generators for augmentation of wind turbine power performance


  • Author: Griffin, D.A.
    Creator Type: Personal
    Creator Info: Lynette (R.) and Associates, Seattle, WA (United States)


  • Sponsor: United States. Department of Energy. Office of Energy Efficiency and Renewable Energy.
    Contributor Type: Organization
    Contributor Info: USDOE Assistant Secretary for Energy Efficiency and Renewable Energy, Washington, DC (United States)


  • Name: National Renewable Energy Laboratory (U.S.)
    Place of Publication: Golden, Colorado
    Additional Info: National Renewable Energy Lab., Golden, CO (United States)
  • Name: Lynette (R.) and Associates, Seattle, WA (United States)
    Place of Publication: United States


  • Creation: 1996-12-01


  • English


  • Content Description: This study focuses on the use of vortex generators (VGs) for performance augmentation of the stall-regulated AWT-26 wind turbine. The goal was to design a VG array which would increase annual energy production (AEP) by increasing power output at moderate wind speeds, without adversely affecting the loads or stall-regulation performance of the turbine. Wind tunnel experiments were conducted at the University of Washington to evaluate the effect of VGs on the AWT-26 blade, which is lofted from National Renewable Energy Laboratory (NREL) S-series airfoils. Based on wind-tunnel results and analysis, a VG array was designed and then tested on the AWT-26 prototype, designated P1. Performance and loads data were measured for P1, both with and without VGs installed. the turbine performance with VGs met most of the design requirements; power output was increased at moderate wind speeds with a negligible effect on peak power. However, VG drag penalties caused a loss in power output for low wind speeds, such that performance with VGs resulted in a net decrease in AEP for sites having annual average wind speeds up to 8.5 m/s. While the present work did not lead to improved AEP for the AWT-2 turbine, it does provide insight into performance augmentation of wind turbines with VGs. The safe design of a VG array for a stall-regulated turbine has been demonstrated, and several issues involving optimal performance with VGs have been identified and addressed. 15 refs., 34 figs., 10 tabs.
  • Physical Description: 81 p.


  • Keyword: Vortex Augmented Turbines
  • Keyword: Capacity
  • Keyword: Performance Testing
  • Keyword: Experimental Data
  • Keyword: Augmentation
  • Keyword: Horizontal Axis Turbines
  • STI Subject Categories: 17 Wind Energy


  • Other Information: PBD: Dec 1996


  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI


  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Report


  • Text


  • Other: DE97000087
  • Report No.: NREL/SR--440-21399
  • Grant Number: AC36-83CH10093
  • DOI: 10.2172/414367
  • Office of Scientific & Technical Information Report Number: 414367
  • Archival Resource Key: ark:/67531/metadc687647


  • Display Note: OSTI as DE97000087