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TECHNICAL PAPERS

Wind Tunnel Aerodynamic Tests of Six Airfoils for Use on Small Wind Turbines

[+] Author and Article Information
Michael S. Selig, Bryan D. McGranahan

Department of Aerospace Engineering, University of Illinois at Urbana–Champaign, Urbana, IL 61801

J. Sol. Energy Eng 126(4), 986-1001 (Nov 18, 2004) (16 pages) doi:10.1115/1.1793208 History: Received March 01, 2004; Revised June 28, 2004; Online November 18, 2004
Copyright © 2004 by ASME
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References

Figures

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UIUC low-speed subsonic wind tunnel
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Experimental setup (Plexiglas splitter plates and traverse enclosure box not shown for clarity)
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Airfoils tested and their corresponding average error in inches for the 12-in. chord models presented in this study
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Turbulence intensity at tunnel centerline, empty test section and with rig in place
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Dynamic pressure variation across test section with the test rig installed
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Illustration of the seven-hole probe used for flow angle measurements
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Combined pitch and yaw angle across test section with the rig installed
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Representative upper-surface oil flow visualization on the E387 (E), Re=300,000, α=5 deg. (Flow is from left to right and the tape indicates the chordwise distance from the airfoil leading edge.)
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Conceptual illustration of the relationship between the surface oil flow features and skin friction distribution in the region of a laminar separation bubble plotted against the airfoil arc length coordinate s/c
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Comparison of major E387 (E) upper-surface flow features between UIUC and LTPT for Re=200,000
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Comparison of major E387 (E) upper-surface flow features between UIUC and LTPT for Re=300,000
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Comparison between UIUC and LTPT E387 lift and moment coefficient data for Re=100,000, 200,000, 300,000, and 460,000
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Comparison between UIUC and LTPT E387 drag coefficient data for Re=100,000, 200,000, 300,000, and 460,000
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Boundary layer trip geometry used to simulate the effects of leading edge debris and errosion (dimensions are in inches)
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Drag polar for the E387 (E)
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Drag polar for the E387 (E) with trip type F
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Drag polar for the FX 63-137 (C)
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Drag polar for the FX 63-137 (C) with trip type F
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Drag polar for the S822 (B)
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Drag polar for the S822 (B) with trip type F
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Drag polar for the S834
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Drag polar for the S834 with trip type F
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Drag polar for the SD2030 (B)
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Drag polar for the SD2030 (B) with trip type F
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Drag polar for the SH3055
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Drag polar for the SH3055 with trip type F

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