A comparison of two- and three-dimensional S809 airfoil properties for rough and smooth HAWT (horizontal-axis wind turbine) rotor operation

Conference · Thu Feb 01 00:00:00 EST 1990

OSTI ID:7109655

Musial, W D; Butterfield, C P; Jenks, M D

At the Solar Energy Research Institute (SERI), we carried out tests to measure the effects of leading-edge roughness on an S809 airfoil using a 10-m, three-bladed, horizontal-axis wind turbine (HAWT). The rotor employed a constant-chord (.457 m) blade geometry with zero twist. Blade structural loads were measured with strain gages mounted at 9 spanwise locations. Airfoil pressure measurements were taken at the 80% spanwise station using 32 pressure taps distributed around the airfoil surface. Detailed inflow measurements were taken using nine R.M. Young Model 8002 propvane anemometers on a vertical plane array (VPA) located 10 m upwind of the test turbine in the prevailing wind direction. The major objective of this test was to determine the sensitivity of the S809 airfoil to roughness on a rotating wind turbine blade. We examined this effect by comparing several parameters. We compared power curves to show the sensitivity of whole rotor performance to roughness. We used pressure measurements to generate pressure distributions at the 80% span which operates at a Reynolds number (Re) of 800,000. We then integrated these distributions to determine the effect of roughness on the section's lift and pressure-drag coefficients. We also used the shapes of these distributions to understand how roughness affects the aerodynamic forces on the airfoil. We also compared rough and smooth wind tunnel data to the rotating blade data to study the effects of blade rotation on the aerodynamic behavior of the airfoil below, near, and beyond stall. 13 refs., 11 figs.

• Research Organization: Solar Energy Research Inst., Golden, CO (USA)
• Sponsoring Organization: DOE/CE
• DOE Contract Number: AC02-83CH10093
• OSTI ID: 7109655
• Report Number(s): SERI/TP-257-3603; CONF-900136-8; ON: DE89009512
• Resource Relation: Conference: 9. ASME wind energy symposium, New Orleans, LA (USA), 14-17 Jan 1990
• Country of Publication: United States
• Language: English

Related Subjects

17 WIND ENERGY
WIND TURBINES
DESIGN
ACCURACY
AERODYNAMICS
AIR FLOW
AIRFOILS
COMMERCIALIZATION
DATA PROCESSING
IMPLEMENTATION
MEASURING METHODS
OPERATION
PERFORMANCE TESTING
POWER DENSITY
PRESSURE EFFECTS
SENSITIVITY
STRUCTURAL MODELS
SURFACE PROPERTIES
TECHNOLOGY ASSESSMENT
TRANSDUCERS
TURBINE BLADES
VARIATIONS
VELOCITY
WIND
WIND TUNNELS
FLUID FLOW
FLUID MECHANICS
GAS FLOW
MACHINERY
MECHANICS
PROCESSING
TESTING
TUNNELS
TURBINES
TURBOMACHINERY
UNDERGROUND FACILITIES
WIND TURBINE BLADE
HORIZONTAL AXIS WIND TURBINE
AIRFOIL
170602* - Wind Energy Engineering- Turbine Design & Operation