Further development of feedback control of cavity flow using experimental based reduced order model

E. Caraballo, X. Yuan, Jesse C Little, M. Debiasi, A. Serrani, J. H. Myatt, M. Samimy

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

4 Scopus citations

Abstract

In our recent work we presented preliminary results for subsonic cavity flow control using a reduced-order model based feedback control derived from experimental measurements. The model was developed using the Proper Orthogonal Decomposition of PIV images in conjunction with the Galerkin projection of the Navier-Stokes equations onto the resulting spatial eigenfunctions. A linear-quadratic optimal controller was designed to reduce cavity flow resonance by controlling the time coefficient and tested in the experiments. The stochastic estimation method was used for real-time estimation of the corresponding time coefficients from 4 dynamic surface pressure measurements. The results obtained showed that the controller was capable of reducing the cavity flow resonance at the design Mach 0.3 flow, as well as at other flows with slightly different Mach number. In the present work we present several improvements made to the method. The reduced order model was derived from a larger set of PIV measurements and we used 6 sensors for the stochastic estimation of the instantaneous time coefficients. The reduced order model so obtained shows a better convergence of the time coefficients. This combined with the 6-sensor estimation improves the control performance while using a scaling factor closer to the theoretically expected value. The controller also performed better in off design flow conditions.

Original languageEnglish (US)
Title of host publicationCollection of Technical Papers - 44th AIAA Aerospace Sciences Meeting
Pages16906-16917
Number of pages12
Volume22
Publication statusPublished - 2006
Externally publishedYes
Event44th AIAA Aerospace Sciences Meeting 2006 - Reno, NV, United States
Duration: Jan 9 2006Jan 12 2006

Other

Other44th AIAA Aerospace Sciences Meeting 2006
CountryUnited States
CityReno, NV
Period1/9/061/12/06

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ASJC Scopus subject areas

  • Space and Planetary Science
  • Aerospace Engineering

Cite this

Caraballo, E., Yuan, X., Little, J. C., Debiasi, M., Serrani, A., Myatt, J. H., & Samimy, M. (2006). Further development of feedback control of cavity flow using experimental based reduced order model. In Collection of Technical Papers - 44th AIAA Aerospace Sciences Meeting (Vol. 22, pp. 16906-16917)