A computer analysis of wind turbine blade dynamic loads

Journal Article · Sat Feb 01 04:00:00 EST 1986 · J. Sol. Energy Eng.; (United States)

DOI:https://doi.org/10.1115/1.3268046· OSTI ID:5982053

Thresher, R W; Wright, A D; Hershberg, E L

The flapping motion of a single wind turbine rotor blade has been analyzed and equations describing the flapping motion have been developed. The analysis was constrained to allow only flapping motions for a cantilevered blade, and the equations of motion are linearized. A computer code, called FLAP (Force and Loads Analysis Program), to solve the equations of motion and compute the blade loads, has been completed and compared to measured loads for a 3-bladed downwind turbine with stiff blades. The results of the program are presented in tabulated form for equidistant points along the blade and equal azimuth angles around the rotor disk. The blade deflection, slope and velocity, flapwise shear and moment, edgewise shear and moment, blade tension, and blade torsion are given. The deterministic excitations considered in the analysis include wind shear, tower shadow, gravity, and a prescribed yaw motion.

• Research Organization: Solar Energy Research Institute, Wind Energy Research Center, Golden, CO 80401
• OSTI ID: 5982053
• Journal Information: J. Sol. Energy Eng.; (United States), Journal Name: J. Sol. Energy Eng.; (United States) Vol. 108:1; ISSN JSEED
• Country of Publication: United States
• Language: English

Related Subjects

17 WIND ENERGY
170602* -- Wind Energy Engineering-- Turbine Design & Operation
AERODYNAMICS
AZIMUTH
COMPUTER CALCULATIONS
COMPUTER CODES
DIFFERENTIAL EQUATIONS
DYNAMIC LOADS
EQUATIONS
EQUATIONS OF MOTION
F CODES
FLUID MECHANICS
GRAVITATION
INCIDENCE ANGLE
MACHINERY
MECHANICS
PARTIAL DIFFERENTIAL EQUATIONS
ROTORS
SHEAR
STRAINS
TORSION
TURBINE BLADES
TURBINES
TURBOMACHINERY
VELOCITY
WIND LOADS
WIND TURBINES