Control of forced and self-sustained oscillations in the flow past a cavity

Clarence W. Rowley, David R. Williams

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

5 Scopus citations

Abstract

This paper presents a series of experiments aimed at model-based feedback control of oscillations in the compressible flow past a rectangular cavity. Zeronet- mass air injection is used with feedback from pressure transducers located inside the cavity to suppress the oscillations, and measurements of the shear layer above the cavity are made for both the natural and suppressed state. A system identification experiment is performed, and used to determine a linear model that describes the oscillations, and this model is used to derive feedback laws for acoustic suppression. The model accurately predicts the behavior of different feedback controllers, including frequencies where suppression occurs, as well as new resonant frequencies that may be introduced by the controller.

Original languageEnglish (US)
Title of host publication41st Aerospace Sciences Meeting and Exhibit
StatePublished - Dec 1 2003
Event41st Aerospace Sciences Meeting and Exhibit 2003 - Reno, NV, United States
Duration: Jan 6 2003Jan 9 2003

Publication series

Name41st Aerospace Sciences Meeting and Exhibit

Other

Other41st Aerospace Sciences Meeting and Exhibit 2003
CountryUnited States
CityReno, NV
Period1/6/031/9/03

All Science Journal Classification (ASJC) codes

  • Space and Planetary Science
  • Aerospace Engineering

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    Rowley, C. W., & Williams, D. R. (2003). Control of forced and self-sustained oscillations in the flow past a cavity. In 41st Aerospace Sciences Meeting and Exhibit (41st Aerospace Sciences Meeting and Exhibit).