Cavity flow control simulations and experiments

Clarence Worth Rowley, Vejapong Juttijudata, David R. Williams

Research output: Contribution to conferencePaperpeer-review

9 Scopus citations

Abstract

Feedback control is used to suppress oscillations in the subsonic flow past a rectangular cavity. A heuristic feedback law is introduced into 2D direct numerical simulations, using zero-net-mass forcing at the leading edge of the cavity and a pressure sensor at the wall, and the oscillations are reduced by -13 dB. Reduced-order models are obtained from full-order direct numerical simulations, and used to design observers to reconstruct the full flow information from a single pressure measurement at the wall, and these observers are shown to be more effective than Linear Stochastic Estimation (LSE), which is commonly used for this purpose. Initial results of a new experiment are also given, and a model for designing zero-net-mass actuators with a desired bandwidth is presented, along with experimental data which supports the model predictions.

Original languageEnglish (US)
Pages1577-1587
Number of pages11
DOIs
StatePublished - 2005
Event43rd AIAA Aerospace Sciences Meeting and Exhibit - Reno, NV, United States
Duration: Jan 10 2005Jan 13 2005

Other

Other43rd AIAA Aerospace Sciences Meeting and Exhibit
Country/TerritoryUnited States
CityReno, NV
Period1/10/051/13/05

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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