Unable to log in or get member pricing? Having trouble changing your password?

Please review our Frequently Asked Questions for complete information on these and other common situations.
 

Vertical Flight Library & Store

Single-Shot Pressure-Sensitive Paint Measurements of Static and Dynamic Stall on a Wind Turbine Airfoil

Kevin Disotell, James Gregory, The Ohio State University
Pourya Nikoueeyan, Jonathan Naughton, University of Wyoming

May 5, 2015

https://doi.org/10.4050/F-0071-2015-10299

Abstract:
Results of a first application of pressure-sensitive paint (PSP) to a low Reynolds number wind turbine airfoil in static and dynamic stall are reported. Recognizing the need for global surface measurement techniques to resolve the unsteady three-dimensional loading on a moving wind turbine blade, fast-responding PSP was applied to the suction side of a Delft DU97-W-300 airfoil (maximum thickness-to-chord ratio of 30%) at a chord Reynolds number of 225,000 in the University of Wyoming open-return wind tunnel. Static and dynamic stall behaviors are compared using instantaneous and phase-averaged global pressure maps. In particular, a three-dimensional pressure topology resembling a stall cell pattern is prominently observed in static shallow stall. The dynamic stall case was characterized by a sinusoidal pitching motion with mean angle of 15.7°, amplitude of 11.2°, and reduced frequency of 0.106 based on semichord. PSP images were acquired at selected phase positions, capturing the breakdown of nominally two-dimensional flow near lift stall, development of post-stall suction near the trailing edge, and a highly three-dimensional reattachment. By using a laser-based excitation system, the PSP signal was sufficiently strong to capture the dominant surface dynamics under these historically challenging test conditions.


Single-Shot Pressure-Sensitive Paint Measurements of Static and Dynamic Stall on a Wind Turbine Airfoil

  • Presented at Forum 71
  • 14 pages
  • SKU # : F-0071-2015-10299
  • Wind Energy

  • Your Price : $30.00
  • Join or log in to receive the member price of $15.00!


VFS member?
Don't add this to your cart just yet!
Be sure to log in first to receive the member price of $15.00!

 
Add To Cart

Reward Value:
(60) Member Points

Single-Shot Pressure-Sensitive Paint Measurements of Static and Dynamic Stall on a Wind Turbine Airfoil

Authors / Details:
Kevin Disotell, James Gregory, The Ohio State University
Pourya Nikoueeyan, Jonathan Naughton, University of Wyoming