The MOD-2 wind turbine: Aeroacoustical noise sources, emissions, and potential impact

Technical Report · Fri Jan 01 04:00:00 EST 1988

OSTI ID:5196403

Kelley, N D; McKenna, H E; Jacobs, E W; Hemphill, R R; Birkenheuer, N J

This report summarizes research into characteristics of acoustic noise emissions of the DOE/NASA MOD-2 wind turbine. The results of this study showed that the MOD-2 noise levels are well below annoyance thresholds within residential structures a kilometer or more from the turbine rotor. It was also found that the inflow turbulent structure has a major influence on the level and characteristics of the low-frequency-range (2-160 Hz) acoustic emissions which, in turn, have implications for the associated structural response of the rotor assembly. The high-frequency-range (A-weighted) levels were found to vary primarily with the mean hub-height wind speed. The rotor inflow turbulence characteristics at the Goodnoe Hills site were found to be controlled almost entirely by the diurnal variation in the vertical stability of the first 100 m of the atmospheric boundary layer. 26 refs., 146 figs., 28 tabs.

• Research Organization: Solar Energy Research Inst., Golden, CO (USA)
• DOE Contract Number: AC02-83CH10093
• OSTI ID: 5196403
• Report Number(s): SERI/TR-217-3036; ON: DE88001132
• Country of Publication: United States
• Language: English

Related Subjects

17 WIND ENERGY
170500* -- Wind Energy-- Environmental Aspects
DATA
EXPERIMENTAL DATA
INFORMATION
MACHINERY
NOISE POLLUTION
NUMERICAL DATA
POLLUTION
TURBINES
TURBOMACHINERY
TURBULENCE
WIND
WIND TURBINES