EXPERIMENTAL INVESTIGATION OF AN UNSTEADY FLOW FIELD AROUND AN AIRFOIL |
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| A. Hribernik, M. Fike, G. Bombek, M. Hribersek |
- Abstract:
- A small wind tunnel where basic aerodynamic properties such as the lift, drag, and pressure distribution of an airfoil can be measured was used to study an unsteady flow-field around an isolated airfoil. Transparent walls enabled the application of PIV (Particle Image Velocimetry) so as to acquire a 2D velocity-field around the considered airfoil. A study was performed at various angles of attack (AOA). No separation was observed at low AOA. At 10° AOA, the separation vortex comprised 50 % of the airfoil’s chord-length, whilst complete stalling of the airfoil occurred at 20° AOA. The observed separation zone was not fixed but was found to oscillate around its mean-position at an interval of ± 10 % of the chord’s length.
- Keywords:
- airfoil, flow separation, PIV measurement
- Download:
- IMEKO-WC-2012-TC9-P1.pdf
- DOI:
- -
- Event details
- Event name:
- XX IMEKO World Congress
- Title:
Metrology for Green Growth
- Place:
- Busan, REPUBLIC of KOREA
- Time:
- 09 September 2012 - 12 September 2012