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WER-36: Summary of wind tunnel results for the NACA 23024 airfoil
Staples, David L. Cao, Hoa V.
Staples, David L.
Cao, Hoa V.
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WER 36.pdf
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Issue Date
1985-09
Type
Technical report
Genre
Keywords
Turbines,Aerodynamics,Aerofoils
Subjects (LCSH)
Citation
David L. Staples, H.V. Cao. Summary of wind tunnel results for the NACA 23024 airfoil. Wind Energy Report no.36.Wichita State University. Center for Energy Studies, 1985, 85 p.
Abstract
Results are presented from two-dimensional and three dimensional
wind tunnel tests of the NACA 23024· airfoil.
Variables include Reynolds numbers ranging from $0.64xl0^6$
To $l.lxl0^6$, the addition of one to three layers of boundary
layer trip strips, and the differences between the 2D and
reflection plane testing techniques. Angles of attack
ranged from -10° to +500 degrees. In order to demonstrate
the repeatability of the experimental apparatus, results
from similar tests on several dates are compared. In
addition, the 3-dimensional data (aspect ratio of 13.33)
are used as input to an algorithm providing corrections to
approximate 2-dimensional conditions, and these results are
compared to the actual 2D data. The corrections include
post-stall effects as well as the familiar Prandtl downwash
adjustment.
Within the range of Reynolds numbers tested, decreased
maximum lift coefficients are associated with increased
Reynolds numbers, while the addition of trip strips was
seen to cause a relatively drastic decrement in $c_1$
and a max sharpening of the stall break. The 3O-to-2D correction
algorithm was seen to give a close approximation to 2D data
for drag at high angles of attack and for lift at low
angles of attack; the correction was less successful at
$c_1$ and in the near post-stall regime, where the behavior
Max of thick 230-series airfoils is known to be erratic.
Table of Contents
Description
Publisher
Wichita State University. Center for Energy Studies
Journal
Book Title
Series
Wind Energy Report;
;no.36
;no.36