Inflow Characterization and Aerodynamics Measurements on a SWT-2.3-101 Wind Turbine: Preprint.
Author: Medina, P.; Singh, M.; Johansen, J.; Jove, A.; Fingersh, L.; Schreck, S.
Pages/Volumes: 14 pp.
Publication Year: 2012
Notes: Presented at the 50th AIAA Aerospace Sciences Meeting/Wind Energy Symposium, 9-12 January, 2012, Nashville, Tennessee
Document Type: Conference Paper
NTIS/GPO Number: 1032674
Subject Code Description: Wind Energy
Abstract: Post processing techniques for aerodynamic data acquired from a Siemens' SWT-2.3-101 turbine have been developed and applied in this paper. The turbine is installed at the National Wind Technology Center (NWTC) as part of Cooperative Research And Development Agreement between Siemens Wind Power and the National Renewable Energy Laboratory (NREL) under U.S. Department of Energy (DOE) sponsorship. The results indicate that the use of these corrections is essential for accurate analysis of the data. An example of local inflow angles, velocities, and inflow velocity over the rotor plane derived from measurements from a 5-hole probe is also presented. Finally the pressure measurements are used to characterize unsteady phenomenon, namely, rotational augmentation and dynamic stall on an inboard station. The results show that the rotational augmentation can considerably increase the attached flow regime compared to the 2D CFD results. The dynamic stall event was seen to significantly delay the stall. Furthermore, the nondimensionalized vortex convection derived from the dynamic stall event was found to agree well with results from others studies.
Accession Number: 53666
Library Notes: NPL-1112 REV
Report Numbers: CP-5000-53666
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