Suction flow control at high reynolds number

R. D. Wallace, P. R. Shea, M. N. Glauser, T. Vaithianathan, H. A. Carlson, R. Schmit

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

Flow control has been shown to reduce the aero-optic distortion due to density fluctuations within a wake of an airborne turret. By manipulating the flow over the turret directly affects the density fluctuation that incur aero-optic distortions. This paper focuses on suction flow control over a three-dimensional turret at a freestream velocity of Mach 0.3. Aero-optic measurement were taken over the flat aperture of the turret with and without open loop suction control clearly showed a decrease in the distortions as the amount of suction increased. Fluctuating surface pressure simultaneously sampled with the aero-optic measurements showed the inverse where as the suction increased the surface pressure rms decreased. Another set of tests were taken as the hemisphere dynamically pitching with open-loop and closed-loop suction flow control. The closed-loop control system employed a low dimensional measurement based proportional controller. Both the open-loop and closed loop control test showed a change in flow over the aperture as compared to the baseline case.

Original languageEnglish (US)
Title of host publication41st AIAA Fluid Dynamics Conference and Exhibit
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Print)9781600869471
DOIs
StatePublished - 2011
Event41st AIAA Fluid Dynamics Conference and Exhibit 2011 - Honolulu, HI, United States
Duration: Jun 27 2011Jun 30 2011

Publication series

Name41st AIAA Fluid Dynamics Conference and Exhibit

Other

Other41st AIAA Fluid Dynamics Conference and Exhibit 2011
CountryUnited States
CityHonolulu, HI
Period6/27/116/30/11

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Energy Engineering and Power Technology
  • Aerospace Engineering
  • Mechanical Engineering

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