Effects of different thickness variation strategies on dynamic stall in an oscillating airfoil

HAMDANI S. H. R., Riaz R., Qureshi H., Parvez K., Ali M., Sheikh S.

3rd AIAA Flow Control Conference, San Francisco, CA, United States Of America, 5 - 08 June 2006, vol.3, pp.1659-1676, (Full Text) identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 3
  • City: San Francisco, CA
  • Country: United States Of America
  • Page Numbers: pp.1659-1676
  • Middle East Technical University Northern Cyprus Campus Affiliated: Yes

Abstract

An active flow control technique has been a challenge for aeronautical engineers since the beginning of flight. One of the more modern ideas is that of adaptive airfoils where the airfoil itself changes shape in response to flow conditions. In this research a code was modified to incorporate the airfoil deformation. Earlier the code had been validated for the oscillating NACA 0012 airfoil without deformation. The study was focused on the incorporation of thickness variation strategy to control the onset of dynamic stall. The results show appreciable reduction in stall effects including the delayed separation, reduced drag and improved negative moment separation.