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Title: A discussion of the results of an in-situ comparison of three full-vector anemometers

Abstract

Extensive field measurements and the numerical modeling of dynamic responses associated with wind turbine rotor blades have pointed to strong interactions with coherent turbulent structures in the turbine inflow. These interactions are thought to be a major source of high-cycle fatigue in the primary structural components of wind turbines. The sources of such turbulent structures are not only natural terrain features but also the wakes from upwind turbines. Many unsteady aerodynamic processes are excited by turbulent eddies ranging in size from several rotor diameters down to the dimensions of the mean blade chord. These processes are responsible for inducing large, fluctuating loads on the turbine rotor blades. For the wind turbine generators now in use, this encompasses a spatial range of about 0.1 to 300 m. To assess our ability to measure the coherent properties of inflow turbulence over such a wide range of spatial range, we performed a study to compare three full-vector anemometers. We believe that to identify the dominant fluid dynamic properties of such flows, the instrumentation used must be capable of good fidelity measurements over the desired spatial range. The sonic anemometer is a primary candidate; we also wanted to compare the results associated with amore » well-designed mechanical instrument which is available at considerably less cost. Two sonic designs and as propeller-bivane were exposed to turbulent flows downstream of both extremely complex and moderately rolling terrain. This paper discusses some of the results of these comparisons with an emphasis on the measurements of turbulent fluctuations.« less

Authors:
; ;
Publication Date:
Research Org.:
Solar Energy Research Inst., Golden, CO (USA)
Sponsoring Org.:
DOE/CE
OSTI Identifier:
6347506
Report Number(s):
SERI/TP-257-4019; CONF-910108-2
ON: DE91002113
DOE Contract Number:  
AC02-83CH10093
Resource Type:
Conference
Resource Relation:
Conference: 7. international conference on interactive information and processing systems for meteorology, oceanography, and hydrology, New Orleans, LA (USA), 13-18 Jan 1991
Country of Publication:
United States
Language:
English
Subject:
17 WIND ENERGY; 47 OTHER INSTRUMENTATION; ANEMOMETERS; EVALUATION; TURBULENT FLOW; MEASURING METHODS; WIND TURBINES; DATA ACQUISITION; STRESSES; VELOCITY; WIND; FLUID FLOW; MACHINERY; MEASURING INSTRUMENTS; TURBINES; TURBOMACHINERY; FULL-VECTOR ANEMOMETERS; TESTING; 170602* - Wind Energy Engineering- Turbine Design & Operation; 440800 - Miscellaneous Instrumentation- (1990-)

Citation Formats

Kelley, N D, Scott, G N, and Allread, J S. A discussion of the results of an in-situ comparison of three full-vector anemometers. United States: N. p., 1990. Web.
Kelley, N D, Scott, G N, & Allread, J S. A discussion of the results of an in-situ comparison of three full-vector anemometers. United States.
Kelley, N D, Scott, G N, and Allread, J S. Mon . "A discussion of the results of an in-situ comparison of three full-vector anemometers". United States. https://www.osti.gov/servlets/purl/6347506.
@article{osti_6347506,
title = {A discussion of the results of an in-situ comparison of three full-vector anemometers},
author = {Kelley, N D and Scott, G N and Allread, J S},
abstractNote = {Extensive field measurements and the numerical modeling of dynamic responses associated with wind turbine rotor blades have pointed to strong interactions with coherent turbulent structures in the turbine inflow. These interactions are thought to be a major source of high-cycle fatigue in the primary structural components of wind turbines. The sources of such turbulent structures are not only natural terrain features but also the wakes from upwind turbines. Many unsteady aerodynamic processes are excited by turbulent eddies ranging in size from several rotor diameters down to the dimensions of the mean blade chord. These processes are responsible for inducing large, fluctuating loads on the turbine rotor blades. For the wind turbine generators now in use, this encompasses a spatial range of about 0.1 to 300 m. To assess our ability to measure the coherent properties of inflow turbulence over such a wide range of spatial range, we performed a study to compare three full-vector anemometers. We believe that to identify the dominant fluid dynamic properties of such flows, the instrumentation used must be capable of good fidelity measurements over the desired spatial range. The sonic anemometer is a primary candidate; we also wanted to compare the results associated with a well-designed mechanical instrument which is available at considerably less cost. Two sonic designs and as propeller-bivane were exposed to turbulent flows downstream of both extremely complex and moderately rolling terrain. This paper discusses some of the results of these comparisons with an emphasis on the measurements of turbulent fluctuations.},
doi = {},
url = {https://www.osti.gov/biblio/6347506}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1990},
month = {10}
}

Conference:
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