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Feedback control in spatially growing boundary layers
KTH, School of Engineering Sciences (SCI), Mechanics.ORCID iD: 0000-0002-3794-1643
KTH, School of Engineering Sciences (SCI), Mechanics.
KTH, School of Engineering Sciences (SCI), Mechanics.
KTH, School of Engineering Sciences (SCI), Mechanics.ORCID iD: 0000-0001-7864-3071
2006 (English)Conference paper, Published paper (Refereed)
Abstract [en]

Linear feedback control has been applied to transitional boundary layer flows. Information from wall-mounted sensors is used to estimate the flow state. The estimated state is then used to compute the optimal feedback control which is applied as blowing and suction with zero net mass-flux through the wall. The performance of the controller is tested in direct numerical simulations of a spatially growing Falkner-Skan- Cooke boundary layer where an inflectional instability is triggered. The extension to spatial boundary layer flows is an important step towards real applications.

Place, publisher, year, edition, pages
2006. 243-248 p.
Series
Fluid Mechanics and its Applications, ISSN 0926-5112
Keyword [en]
Control, Estimation, Falkner-Skan-Cooke, Flow control, LQG, Navier-Stokes equations, Orr-Sommerfeld/Squire
National Category
Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:kth:diva-155080ISI: 000236905600032Scopus ID: 2-s2.0-84859841935ISBN: 9781402034596 (print)OAI: oai:DiVA.org:kth-155080DiVA: diva2:760912
Conference
6th IUTAM Symposium on Laminar-Turbulent Transition, Bangalore, INDIA, DEC 13-17, 2004
Note

QC 20141105

Available from: 2014-11-05 Created: 2014-10-30 Last updated: 2017-03-27Bibliographically approved

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Chevalier, Mattias P.Henningson, Dan S.

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Citation style
  • apa
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  • de-DE
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  • nn-NB
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  • Other locale
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Output format
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  • asciidoc
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