EXPERIMENTAL INVESTIGATION OF AN UNSTEADY FLOW FIELD AROUND AN AIRFOIL

• 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:

  _unreg_wc-2012.TC9-P1

Event details:

• IMEKO TC:
• Event name:

  XX IMEKO World Congress
• Title:

  Metrology for Green Growth

• Place:

  Busan, REPUBLIC of KOREA
• Time:

  9 September 2012 - 12 September 2012