Load Response of Horizontal-Axis Wind Turbines to Turbulence (Final Subcontract Report)

Technical Report · Sat Sep 01 04:00:00 EDT 1990

DOI:https://doi.org/10.2172/6494589· OSTI ID:6494589

Wilson, R. E. ^[1]; Walker, Jr., S. N. ^[1]; Hartin, J. R. ^[1]; Weber, T. L. ^[1]

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1. Oregon State Univ., Corvallis, OR (United States)

A structural and aerodynamic model of a three-bladed rigid-hub wind turbine is described. The model includes four structural degrees of freedom; one for each blade in flapping, and tower translation. The aerodynamic model includes the effects of wind turbulence as well as the unsteady aerodynamic effects caused by the airfoil shed and trailing wakes. A separate code developed at the Pacific Northwest Laboratory is used to simulate wind turbulence for input to the model described in this report. This model is validated by comparison of code predictions to measured blade bending moments for two different field test turbines. Comparisons are made between measured data and predictions for both mean loads and cyclic flatwise bending moments. The comparisons for the cyclic bending moments include (1) the history of bending moment over one revolution of blade rotation, (2) the power spectral density of the bending moment, and (3) rainflow counting of the bending moment. Conclusions are then made as to the accuracy of the code predictions.

• Research Organization: Solar Energy Research Inst. (SERI), Golden, CO (United States); Oregon State Univ., Corvallis, OR (United States)
• Sponsoring Organization: USDOE Office of Conservation & Renewable Energy (CE)
• DOE Contract Number: AC02-83CH10093
• OSTI ID: 6494589
• Report Number(s): SERI/TP--257-3891; ON: DE90000375
• Country of Publication: United States
• Language: English

Related Subjects

17 WIND ENERGY
170602* -- Wind Energy Engineering-- Turbine Design & Operation
AERODYNAMICS
DIFFERENTIAL EQUATIONS
DOCUMENT TYPES
DYNAMIC LOADS
ENERGY SOURCES
EQUATIONS
EQUATIONS OF MOTION
FLUID MECHANICS
HORIZONTAL AXIS TURBINES
MACHINERY
MATHEMATICAL MODELS
MECHANICS
PARTIAL DIFFERENTIAL EQUATIONS
POWER
PROGRESS REPORT
RENEWABLE ENERGY SOURCES
TURBINE BLADES
TURBINES
TURBOMACHINERY
TURBULENCE
WIND LOADS
WIND POWER
WIND TURBINES
aerodynamics
computer codes
wind energy
wind loads
wind turbines