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Rotational augmentation on a 2.3 MW rotor blade with thick flatback airfoil cross-sections : preprint

Author: Scott Schreck; National Renewable Energy Laboratory (U.S.),
Publisher: [Golden, Colo.] : National Renewable Energy Laboratory, 2013.
Series: Conference paper (National Renewable Energy Laboratory (U.S.)), 5000-57372.
Edition/Format:   eBook : Document : Conference publication : National government publication : English
Summary:
Rotational augmentation was analyzed for a 2.3 MW wind turbine, which was equipped with thick flatback airfoils at inboard radial locations and extensively instrumented for acquisition of time varying surface pressures. Mean aerodynamic force and surface pressure data were extracted from an extensive field test database, subject to stringent criteria for wind inflow and turbine operating conditions. Analyses of  Read more...
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Genre/Form: Conference papers and proceedings
Congresses
Material Type: Conference publication, Document, Government publication, National government publication, Internet resource
Document Type: Internet Resource, Computer File
All Authors / Contributors: Scott Schreck; National Renewable Energy Laboratory (U.S.),
OCLC Number: 839554926
Notes: Title from PDF title screen (viewed on Apr. 16, 2013).
"January 2013."
"To be presented at the 51st AIAA Aerospace Sciences Meeting, Grapevine, Texas, January 7-10, 2013."
Description: 1 online resource (9 pages) : color illustrations.
Series Title: Conference paper (National Renewable Energy Laboratory (U.S.)), 5000-57372.
Responsibility: S. Schreck [and four others].

Abstract:

Rotational augmentation was analyzed for a 2.3 MW wind turbine, which was equipped with thick flatback airfoils at inboard radial locations and extensively instrumented for acquisition of time varying surface pressures. Mean aerodynamic force and surface pressure data were extracted from an extensive field test database, subject to stringent criteria for wind inflow and turbine operating conditions. Analyses of these data showed pronounced amplification of aerodynamic forces and significant enhancements to surface pressures in response to rotational influences, relative to two-dimensional, stationary conditions. Rotational augmentation occurrence and intensity in the current effort was found to be consistent with that observed in previous research. Notably, elevated airfoil thickness and flatback design did not impede rotational augmentation.

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