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Dynamical models for control of cavity oscillations

Rowley, Clarence W. and Colonius, Tim and Murray, Richard M. (2001) Dynamical models for control of cavity oscillations. In: 7th AIAA/CEAS Aeroacoustics Conference and Exhibit, 28-30 May 2001, Maastricht, Netherlands.

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We investigate nonlinear dynamical models for self-sustained oscillations in the flow past a rectangular cavity. The models are based on the method of Proper Orthogonal Decomposition (POD) and Galerkin projection, and we introduce an inner product and formulation of the equations of motion which enables one to use vector-valued POD modes for compressible flows. We obtain models between 3 and 20 states, which accurately describe both the short-time and long-time dynamics. This is a substantial improvement over previous models based on scalar-valued POD modes, which capture the dynamics for short time, but deviate for long time.

Item Type:Conference or Workshop Item (Paper)
Related URLs:
URLURL TypeDescription Paper Paper
Rowley, Clarence W.0000-0002-9099-5739
Colonius, Tim0000-0003-0326-3909
Murray, Richard M.0000-0002-5785-7481
Additional Information:© 2001 by the authors. Published by the American Institute of Aeronautics and Astronautics, Inc. with permission. Published Online: 22 Aug 2012. This work was supported by AFOSR under grants F49620-98-1-0095 and F49620-95-1-0419. The first author gratefully acknowledges a NSF graduate research fellowship.
Funding AgencyGrant Number
Air Force Office of Scientific Research (AFOSR)F49620-98-1-0095
Air Force Office of Scientific Research (AFOSR)F49620-95-1-0419
NSF Graduate Research FellowshipUNSPECIFIED
Subject Keywords:Aeroacoustics
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Other Numbering System NameOther Numbering System ID
AIAA Paper2001-2126
Record Number:CaltechAUTHORS:20190726-104731145
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:97470
Deposited By: Melissa Ray
Deposited On:01 Aug 2019 20:02
Last Modified:16 Nov 2021 17:31

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