Full Content is available to subscribers

Subscribe/Learn More  >

Plasma Actuator for Wake Flow Control of High Camber Blades During Part Load Operation

[+] Author Affiliations
Robert Van Dyken, Aaron Byerley, Tom McLaughlin

U.S. Air Force Academy

Horacio Perez-Blanco

Pennsylvania State University, University Park, PA

Paper No. GT2004-53227, pp. 351-363; 13 pages
  • ASME Turbo Expo 2004: Power for Land, Sea, and Air
  • Volume 5: Turbo Expo 2004, Parts A and B
  • Vienna, Austria, June 14–17, 2004
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 0-7918-4170-7 | eISBN: 0-7918-3739-4
  • Copyright © 2004 by ASME


Plasma actuators, composed of two electrodes with a constant or time-varying voltage difference applied between them are known to impart a directed momentum on the gas in the vicinity of one of the electrodes. This work focuses on a plasma actuator installed on one blade of a gas turbine blade cascade. These high-camber angle blades are used for transportation and stationary applications, and at partial load (i.e. low flow speeds) they exhibit flow separation on the suction side. A plasma actuator, optimized in terms of insulation thickness and applied voltage waveform, is placed on the suction-side, near the trailing edge of the blade, and airfoil plasma-off performance compared to plasma-on. Separation is detected via surface pressure measurements, and loss of stagnation pressure via measurements of total pressure with Pitot tubes. Flow directions are measured in a few cases as well. The actuator is found to decrease the stagnation pressure loss at most experimental conditions, and to increase the flow turning angle. Conclusions as to the plasma actuator effectiveness are derived from blade loss coefficients. The plasma actuator can reduce stagnation pressure losses by 50% with the most effective actuator of those investigated thus far in this cascade. An approximate ratio of electrical to dynamic forces is defined and calculated as a means of characterizing the relative magnitude of the plasma force required to avert separation. Since the loss is measured in the wake of the blade, the term “wake filling configuration” seems an appropriate description of this specific actuator location.

Copyright © 2004 by ASME



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In