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A simplified free wake method for horizontal-axis wind turbine performance prediction

Conference ·
OSTI ID:6197517
;
Based on the assumption that wake geometry of a horizontal-axis wind turbine closely resembles that of a hovering helicopter, a method is presented for predicting the performance of a horizontal-axis wind turbine. A vortex method is used in which the wake is composed of an intense tip-vortex and a diffused inboard wake. Performance parameters are calculated by application of the Bio-Savart law along with the Kutta-Joukowski theorem. Predictions are shown to compare favorably with values from a more complicated full free wake analysis and with existing experimental data, but require more computational effort than an existing fast free wake method.
OSTI ID:
6197517
Report Number(s):
CONF-8706186-
Country of Publication:
United States
Language:
English

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Related Subjects

17 WIND ENERGY
170602* -- Wind Energy Engineering-- Turbine Design & Operation
AERODYNAMICS
AIR FLOW
FLOW MODELS
FLUID FLOW
FLUID MECHANICS
GAS FLOW
HORIZONTAL AXIS TURBINES
MACHINERY
MATHEMATICAL MODELS
MECHANICS
PERFORMANCE
ROTORS
TIPVANE ROTORS
TURBINES
TURBOMACHINERY
VORTEX AUGMENTED TURBINES
VORTEX FLOW
WIND
WIND TURBINES