0
TECHNICAL PAPERS

Blade-Wake Interaction Noise for Turbines With Downwind Rotors

[+] Author and Article Information
G. M. McNerney

The Wind Turbine Company, 1261 120th Ave. NE, Bellevue, WA 98005e-mail: gmcnwind@comcast.net

C. P. van Dam

Department of Mechanical and Aeronautical Engineering, University of California, Davis, Davis, CA 95616-5294e-mail: cpvandam@ucdavis.edu

D. T. Yen-Nakafuji

Renewable Wind Energy, California Energy Commission, 1516 9th Street, MS 43, Sacramento, CA 95814-5504e-mail: dyen@energy.state.ca.us

J. Sol. Energy Eng 125(4), 497-505 (Nov 26, 2003) (9 pages) doi:10.1115/1.1627830 History: Received February 27, 2003; Revised June 02, 2003; Online November 26, 2003
Copyright © 2003 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Flow regimes for smooth circular cylinder at high Reynolds numbers 3.
Grahic Jump Location
Time-averaged surface pressure distributions for circular cylinder at medium and high Reynolds numbers 2.
Grahic Jump Location
Strouhal number for smooth circular cylinder at medium and high Reynolds numbers 5.
Grahic Jump Location
Power spectra of the lift fluctuations (A is cylinder planform area=L⋅D,q is the freestream dynamic pressure, Φ(f ) is the power spectrum of the lift fluctuations as a function of frequency). (a) Subcritical Re=1.3×105, (b) Supercritical Re=7.2×105, (c) Transition from supercritical to transcritical Re=3.7×106, (d) Transcritical Re=7.1×106. Note, dotted spikes in the spectra are thought to be caused by tunnel vibration 5.
Grahic Jump Location
Effect of surface roughness on drag coefficient of circular cylinder 3.
Grahic Jump Location
Effect of freestream turbulence on fluctuating lift coefficient, cl, of a circular cylinder 10.
Grahic Jump Location
Spanwise correlation length for circular cylinder at smooth and turbulent flow conditions 9.
Grahic Jump Location
Effect of cylinder aspect ratio on cl, for a range of Reynolds numbers 14.
Grahic Jump Location
Vortex suppression devices: (a) helical strake, (b) spoiler plates, (c) perforated shroud, (d) slatted shroud, (e) splitter plate, (f ) streamlined fairing, (g) guiding vane 16.
Grahic Jump Location
Sound radiated from a cylinder of 0.5-inch diameter in wind tunnel 17.
Grahic Jump Location
Lines of equal sound intensity level for sound due to fluctuating lift and drag radiated from a cylinder of diameter D in a uniform flow of velocity U. (a) Microphone outside test section at an angle 90° from freestream direction, U=225 ft/s. (b) Microphone upstream of the cylinder in tunnel settling chamber at an angle 0° from freestream direction, U=140 ft/s.
Grahic Jump Location
POC acoustic measurement layout.
Grahic Jump Location
Exterior/Interior low-frequency acoustic transfer function.
Grahic Jump Location
POC field measurement results.
Grahic Jump Location
POC interior annoyance SPL level (weighted by ISO C plus exterior/interior transfer for impulsive noise) as a function of tip speed.

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In