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|a E 1.99:NREL/TP-257-4654
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|a E 1.99:CONF-911287--1
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|a NREL/TP-257-4654
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| 088 |
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|a CONF-911287--1
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| 088 |
|
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|a DE92001200
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| 245 |
0 |
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|a Recent results from data analysis of dynamic stall on wind turbine blades.
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| 260 |
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|a Oak Ridge, Tenn. :
|b United States. Department of Energy. Technical Information Center ;
|a Oak Ridge, Tenn. :
|b Distributed by the Office of Scientific and Technical Information, U.S. Department of Energy,
|c 1992.
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| 300 |
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|a Pages: (14 pages).
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| 336 |
|
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|a text
|b txt
|2 rdacontent
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| 337 |
|
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|a computer
|b c
|2 rdamedia
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| 338 |
|
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|a online resource
|b cr
|2 rdacarrier
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| 500 |
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|a DOE Technical report.
|
| 500 |
|
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|a Published through the Information Bridge: DOE Scientific and Technical Information.
|
| 500 |
|
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|c 01/01/1992.
|
| 500 |
|
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|a "NREL/TP-257-4654"
|
| 500 |
|
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|a "CONF-911287--1"
|
| 500 |
|
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|a " DE92001200"
|
| 500 |
|
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|a International Energy Agency (IEA) experts meeting on wind turbine aerodynamics, Stuttgart (Germany), 3-4 Dec 1991.
|
| 500 |
|
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|a Simms, D.; Butterfield, C.P.; Huyer, S.
|
| 500 |
|
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|a National Renewable Energy Lab., Golden, CO (United States)
|
| 500 |
|
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|a United States. Dept. of Energy. Washington, DC (United States)
|
| 520 |
3 |
|
|a Wind turbines are subjected to dynamic loading from a variety of different sources. Wind shear and turbulence cause time-varying inflow that results in unsteady airloads. Tower shadow, upwind turbine wakes, and yaw angles also introduce unsteady inflow to wind turbine rotors. Wind turbine designers must predict these loads accurately in order to adequately design blades, hubs, and the remaining support structure to achieve a 30-year life. Structural analysts have not been able to predict mean or dynamic loads accurately enough to predict the fatigue life of major wind turbine components with confidence. Part of the problem is due to uncertainty in the stochastic wind environments as mentioned earlier. Another important part of the problem is the lack of basic knowledge of rotary wing airfoil stall performance. There is mounting evidence that dynamic stall may be related to dynamic loads that are greater than predictions. This paper describes some results of investigations of unsteady aerodynamic loads measured on a wind turbine blade. The objective of the investigation is to understand the steady and unsteady stall behavior of wind turbine blades. 13 refs.
|
| 538 |
|
|
|a Available via the World Wide Web.
|
| 500 |
|
|
|a Electronic resource.
|
| 650 |
|
4 |
|a Turbine Blades.
|
| 650 |
|
4 |
|a Dynamic Loads.
|
| 650 |
|
4 |
|a Aerodynamics.
|
| 650 |
|
4 |
|a Horizontal Axis Turbines.
|
| 650 |
|
4 |
|a Rotors.
|
| 650 |
|
4 |
|a Shear.
|
| 650 |
|
4 |
|a Turbulence.
|
| 650 |
|
0 |
|a Winds.
|0 http://id.loc.gov/authorities/subjects/sh85146948
|
| 650 |
|
4 |
|a Equipment.
|
| 650 |
|
4 |
|a Fluid Mechanics.
|
| 650 |
|
4 |
|a Machinery.
|
| 650 |
|
4 |
|a Mechanics.
|
| 650 |
|
4 |
|a Turbines.
|
| 650 |
|
4 |
|a Turbomachinery.
|
| 650 |
|
4 |
|a Wind Turbines.
|
| 650 |
|
0 |
|a Wind power.
|0 http://id.loc.gov/authorities/subjects/sh85146874
|
| 710 |
1 |
|
|a United States.
|b Department of Energy.
|0 http://id.loc.gov/authorities/names/n78034868
|
| 710 |
1 |
|
|a United States.
|b Department of Energy.
|b Technical Information Center.
|0 http://id.loc.gov/authorities/names/n78018245
|
| 710 |
1 |
|
|a United States.
|b Department of Energy.
|b Office of Scientific and Technical Information.
|0 http://id.loc.gov/authorities/names/n84003987
|
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|b Michigan State University
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