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

Clarence W. Rowley; David R. Williams

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

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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 language	English (US)
Title of host publication	41st Aerospace Sciences Meeting and Exhibit
State	Published - Dec 1 2003
Event	41st Aerospace Sciences Meeting and Exhibit 2003 - Reno, NV, United States Duration: Jan 6 2003 → Jan 9 2003

Publication series

Name	41st Aerospace Sciences Meeting and Exhibit

Other

Other	41st Aerospace Sciences Meeting and Exhibit 2003
Country/Territory	United States
City	Reno, NV
Period	1/6/03 → 1/9/03

All Science Journal Classification (ASJC) codes

Space and Planetary Science
Aerospace Engineering

Cite this

@inproceedings{5dc437f4febf426d85ed074db844b015,

title = "Control of forced and self-sustained oscillations in the flow past a cavity",

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.",

author = "Rowley, {Clarence W.} and Williams, {David R.}",

year = "2003",

month = dec,

day = "1",

language = "English (US)",

isbn = "9781624100994",

series = "41st Aerospace Sciences Meeting and Exhibit",

booktitle = "41st Aerospace Sciences Meeting and Exhibit",

note = "41st Aerospace Sciences Meeting and Exhibit 2003 ; Conference date: 06-01-2003 Through 09-01-2003",

}

TY - GEN

T1 - Control of forced and self-sustained oscillations in the flow past a cavity

AU - Rowley, Clarence W.

AU - Williams, David R.

PY - 2003/12/1

Y1 - 2003/12/1

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=34147223972&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34147223972&partnerID=8YFLogxK

M3 - Conference contribution

SN - 9781624100994

T3 - 41st Aerospace Sciences Meeting and Exhibit

BT - 41st Aerospace Sciences Meeting and Exhibit

T2 - 41st Aerospace Sciences Meeting and Exhibit 2003

Y2 - 6 January 2003 through 9 January 2003

ER -

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

Abstract

Publication series

Other

All Science Journal Classification (ASJC) codes

Other files and links

Fingerprint

Cite this