POD based experimental flow control on a NACA-4412 airfoil (invited)

Mark N. Glauser, Monica J. Young, Hiroshi Higuchi, Charles E. Tinney, Henry Carlson

Research output: Contribution to conferencePaper

21 Scopus citations

Abstract

We are developing feedback control methods based on the use of Proper Orthogonal Decomposition POD and Modified Linear Stochastic Estimation mLSE for the flow over a NACA 4412 airfoil. By using a combination of Particle Image Velocimetry PIV and multiple surface pressure measurements, processed through a POD/mLSE algorithm, estimates of the velocity field from wall pressure alone are extracted. From such estimates knowledge of the state of the flow above the airfoil can be obtained (i.e., attached, fully separated or incipiently separated). Integral to the POD/mLSE algorithm is the estimation of the global POD coefficients. Here we are attempting to use these time dependent coefficients, which are estimated from wall pressure only, in a simple proportional feed-back loop (as the time series to drive the actuators) to keep the flow attached.

Original languageEnglish (US)
Pages4861-4870
Number of pages10
StatePublished - Jul 1 2004
Event42nd AIAA Aerospace Sciences Meeting and Exhibit - Reno, NV, United States
Duration: Jan 5 2004Jan 8 2004

Other

Other42nd AIAA Aerospace Sciences Meeting and Exhibit
CountryUnited States
CityReno, NV
Period1/5/041/8/04

ASJC Scopus subject areas

  • Engineering(all)

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