Dynamical models for control of cavity oscillations

Clarence W. Rowley, Tim Colonius, Richard M. Murray

Research output: Contribution to conferencePaper

24 Scopus citations

Abstract

We investigate nonlinear dynamical models for selfsustained 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 shorttime and long-time dynamics. This is a substantial improvement over previous models based on scalarvalued POD modes, which capture the dynamics for short time, but deviate for long time.

Original languageEnglish (US)
StatePublished - Dec 1 2001
Externally publishedYes
Event7th AIAA/CEAS Aeroacoustics Conference and Exhibit, 2001 - Maastricht, Netherlands
Duration: May 28 2001May 30 2001

Other

Other7th AIAA/CEAS Aeroacoustics Conference and Exhibit, 2001
CountryNetherlands
CityMaastricht
Period5/28/015/30/01

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Acoustics and Ultrasonics

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    Rowley, C. W., Colonius, T., & Murray, R. M. (2001). Dynamical models for control of cavity oscillations. Paper presented at 7th AIAA/CEAS Aeroacoustics Conference and Exhibit, 2001, Maastricht, Netherlands.