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Low Reynolds number wind tunnel measurements - The importance of being earnestA method for obtaining two-dimensional aerodynamic force coefficients at low Reynolds numbers using a three-component external platform balance is presented. Regardless of method, however, the importance of understanding the possible influence of the test facility and instrumentation on the final results cannot be overstated. There is an uncertainty in the ability of the facility to simulate a two-dimensional flow environment due to the confinement effect of the wind tunnel and the method used to mount the airfoil. Additionally, the ability of the instrumentation to accurately measure forces and pressures has an associated uncertainty. This paper focuses on efforts taken to understand the errors introduced by the techniques and apparatus used at the University of Notre Dame, and, the importance of making an earnest estimate of the uncertainty. Although quantitative estimates of facility induced errors are difficult to obtain, the uncertainty in measured results can be handled in a straightforward manner and provide the experimentalist, and others, with a basis to evaluate experimental results.
Document ID
19880023963
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Mueller, Thomas J.
(Notre Dame Univ. IN, United States)
Batill, Stephen M.
(Notre Dame Univ. IN, United States)
Brendel, Michael
(Notre Dame Univ. IN, United States)
Perry, Mark L.
(Notre Dame Univ. IN, United States)
Bloch, Diane R.
(Notre Dame, University IN, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1986
Subject Category
Aerodynamics
Meeting Information
Meeting: Aerodynamics at low Reynolds numbers Re greater than 10 to the 4th and less than 10 to the 6th
Location: London
Start Date: October 15, 1986
End Date: October 18, 1986
Accession Number
88A11190
Funding Number(s)
CONTRACT_GRANT: NSG-1419
CONTRACT_GRANT: N00014-83-K-0239
Distribution Limits
Public
Copyright
Other

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