This work undertakes an aerodynamic analysis over the parked and the rotating NREL Phase VI wind turbine blade. The experimental sequences from NASA Ames wind tunnel selected for this study respond to the parked blade and the rotating configuration, both for the upwind, two-bladed wind turbine operating at nonyawed conditions. The objective is to bring some light into the nature of the flow field and especially the type of stall behavior observed when 2D aerofoil steady measurements are compared to the parked blade and the latter to the rotating one. From averaged pressure coefficients together with their standard deviation values, trailing and leading edge separated flow regions have been found, with the limitations of the repeatability of the flow encountered on the blade. Results for the parked blade show the progressive delay from tip to root of the trailing edge separation process, with respect to the 2D profile, and also reveal a local region of leading edge separated flow or bubble at the inner, 30% and 47% of the blade. For the rotating blade, results at inboard 30% and 47% stations show a dramatic suppression of the trailing edge separation, and the development of a leading edge separation structure connected with the extra lift.
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August 2008
Research Papers
Three-Dimensional and Rotational Aerodynamics on the NREL Phase VI Wind Turbine Blade
Alvaro Gonzalez,
Alvaro Gonzalez
CENER (National Renewable Energy Center)
, Ciudad de la Innovacion 7, Sarriguren, Navarra 31621, Spain
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Xabier Munduate
Xabier Munduate
CENER (National Renewable Energy Center)
, Ciudad de la Innovacion 7, Sarriguren, Navarra 31621, Spain
Search for other works by this author on:
Alvaro Gonzalez
CENER (National Renewable Energy Center)
, Ciudad de la Innovacion 7, Sarriguren, Navarra 31621, Spain
Xabier Munduate
CENER (National Renewable Energy Center)
, Ciudad de la Innovacion 7, Sarriguren, Navarra 31621, SpainJ. Sol. Energy Eng. Aug 2008, 130(3): 031008 (7 pages)
Published Online: July 1, 2008
Article history
Received:
February 23, 2007
Revised:
December 4, 2007
Published:
July 1, 2008
Citation
Gonzalez, A., and Munduate, X. (July 1, 2008). "Three-Dimensional and Rotational Aerodynamics on the NREL Phase VI Wind Turbine Blade." ASME. J. Sol. Energy Eng. August 2008; 130(3): 031008. https://doi.org/10.1115/1.2931506
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