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Aerodynamic load characterisation of a low speed aerofoil using particle image velocimetry

Published online by Cambridge University Press:  03 February 2016

B. W. van Oudheusden ,
E. W. F. Casimiri  and
F. Scarano
B. W. van Oudheusden
Affiliation:
Delft University of Technology, Delft, The Netherlands
E. W. F. Casimiri
Affiliation:
Delft University of Technology, Delft, The Netherlands
F. Scarano
Affiliation:
Delft University of Technology, Delft, The Netherlands
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Abstract

Particle image velocimetry (PIV) measurements of the flow around a wing section are employed as a basis for non-intrusive aerodynamic mean loads characterisation, providing sectional lift, drag and pitching moment. The technique relies upon the application of control-volume approaches in combination with the deduction of the pressure from the PIV experimental data through application of the momentum equation. The treatment can also be applied when the flow is unsteady; in that case time-mean loads are obtained from velocity statistics, through the use of Reynolds-averaged formulation of the governing equations. The procedure was applied in the experimental investigation of a NACA 642A015 aerofoil, in which the PIV approach is validated against standard pressure-based methods (surface pressure distribution and wake rake). The chord Reynolds number considered in the investigation ranges between 1 – 7 × 105. In addition, the consistency and potential performance of the method was assessed by means of synthetic velocity field data obtained from a numerical flow simulation.

Type
Research Article
Information
The Aeronautical Journal , Volume 112 , Issue 1130 , April 2008 , pp. 197 - 205
Copyright
Copyright © Royal Aeronautical Society 2008 

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