An experimental and analytical investigation of an axisymmetric turbulent wake with rotation was carried out. The axial and azimuthal (swirl) velocity fields were measured in the wake of a single 3-bladed model wind turbine with rotor diameter of 0.91m, up to 20 diameters downstream. The turbine was positioned in the free stream, near the entrance of the 6 m × 2.7 m cross section of the UNH Flow Physics Facility. Measurements were conducted at different rotor loading conditions with blade tip-speed ratios from 2.0 to 2.8. A pitot-static tube and constant temperature hot-wire anemometry with a multi-wire sensor were used to measure velocity fields. An equilibrium similarity theory for the turbulent axisymmetric wake with rotation was outlined, and first evidence for a new scaling function for the decay of the mean swirling velocity component, Wmax ∝ x−1 ∝ , was found.
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ASME 2013 Fluids Engineering Division Summer Meeting
July 7–11, 2013
Incline Village, Nevada, USA
Conference Sponsors:
- Fluids Engineering Division
ISBN:
978-0-7918-5555-3
PROCEEDINGS PAPER
Experimental Investigation and Similarity Solution of the Axisymmetric Turbulent Wake With Rotation Available to Purchase
Martin Wosnik,
Martin Wosnik
University of New Hampshire, Durham, NH
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Nathaniel Dufresne
Nathaniel Dufresne
University of New Hampshire, Durham, NH
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Martin Wosnik
University of New Hampshire, Durham, NH
Nathaniel Dufresne
University of New Hampshire, Durham, NH
Paper No:
FEDSM2013-16565, V01BT12A004; 12 pages
Published Online:
December 13, 2013
Citation
Wosnik, M, & Dufresne, N. "Experimental Investigation and Similarity Solution of the Axisymmetric Turbulent Wake With Rotation." Proceedings of the ASME 2013 Fluids Engineering Division Summer Meeting. Volume 1B, Symposia: Fluid Machinery; Fluid Power; Fluid-Structure Interaction and Flow-Induced Noise in Industrial Applications; Flow Applications in Aerospace; Flow Manipulation and Active Control: Theory, Experiments and Implementation; Fundamental Issues and Perspectives in Fluid Mechanics. Incline Village, Nevada, USA. July 7–11, 2013. V01BT12A004. ASME. https://doi.org/10.1115/FEDSM2013-16565
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