Three-dimensional airfoil performance measurements on a rotating wing
The objective of this comprehensive research program was to study the effects of horizontal-axis wind turbine (HAWT) blade rotation on aerodynamic behavior below, near, and beyond stall. This paper describes the flow angle sensor used to measure angle of attack (AOA) and how the sensor was calibrated, and it gives results of pressure integrations on the blade. Aerodynamic, load, flow-visualization, and inflow measurements were made on a 10-m, three-bladed, downwind HAWT. A video camera was mounted on the rotor to record video images of tufts attached to the low-pressure side of a constant-chord, zero-twist blade. Load measurements were made using strain gages mounted every 10% of the blade's span. Pressure taps were located at 32 chordwise positions and revealed pressure distributions comparable with wind tunnel data. Inflow was measured using a vertical-plane array of eight propvane and five triaxial (U-V-W) prop-type anemometers located 10 m upwind in the predominant wind direction. Results show evidence of stall hysteresis and unsteadiness at high AOA. Correlations with analytical predictions and wind tunnel tests show good agreement at low AOA and poor agreement at high AOA. 7 refs., 12 figs.
- Research Organization:
- Solar Energy Research Inst., Golden, CO (USA)
- DOE Contract Number:
- AC02-83CH10093
- OSTI ID:
- 5943838
- Report Number(s):
- SERI/TP-217-3505; CONF-890717-2; ON: DE89009443
- Country of Publication:
- United States
- Language:
- English
Similar Records
Aerodynamic testing of a rotating wind turbine blade
A comparison of two- and three-dimensional S809 airfoil properties for rough and smooth HAWT (horizontal-axis wind turbine) rotor operation
Related Subjects
170602* -- Wind Energy Engineering-- Turbine Design & Operation
AERODYNAMICS
DYNAMIC LOADS
ENERGY SOURCES
FLOW ANGLE SENSOR
FLOW VISUALIZATION
FLUID MECHANICS
HORIZONTAL AXIS TURBINES
HORIZONTAL AXIS WIND TURBINE
MACHINERY
MECHANICS
POWER
PRESSURE
PRESSURE MEASUREMENT
RENEWABLE ENERGY SOURCES
STRAINS
TURBINES
TURBOMACHINERY
WIND ENERGY
WIND LOADS
WIND POWER
WIND TURBINES