Experimental control of natural perturbations in channel flow

Fabien Juillet, B. J. McKeon, Peter J. Schmid

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

A combined approach using system identification and feed-forward control design has been applied to experimental laminar channel flow in an effort to reduce the naturally occurring disturbance level. A simple blowing/suction strategy was capable of reducing the standard deviation of the measured sensor signal by 45%, which markedly exceeds previously obtained results under comparable conditions. A comparable reduction could be verified over a significant streamwise extent, implying an improvement over previous, more localized disturbance control. The technique is effective, flexible, and robust, and the obtained results encourage further explorations of experimental control of convection-dominated flows.
Original languageEnglish (US)
Pages (from-to)296-309
Number of pages14
JournalJournal of Fluid Mechanics
Volume752
DOIs
StatePublished - Aug 10 2014
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2022-09-13

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Condensed Matter Physics

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