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The Application of Optimal Control to Boundary Layer Flow
KTH, School of Engineering Sciences (SCI), Mechanics. KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW.ORCID iD: 0000-0001-7864-3071
KTH, School of Engineering Sciences (SCI), Mechanics. KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW.ORCID iD: 0000-0002-5913-5431
2006 (English)In: IUTAM Symposium on One Hundred Years of Boundary Layer Research / [ed] G.E.A. Meier, K.R. Sreenivasan, Hans-Joachim Heinemann, Springer, 2006, 59-71 p.Conference paper, Published paper (Refereed)
Abstract [en]

Modern optimal control theory can be used to calculate the optimal steady suction needed to e.g. relaminarize the flow or to delay transition. This has been used to devise the best possible suction distributions for keeping the flow laminar, and applied for flat plate boundary layers as well as boundary layers on swept wings of airplanes. Optimal control theory can also be used to device tile best possible measurement feedback control. Real time measurements of How quantities at the wall is fed back to control the flow through wall actuation, using e.g. blowing and suction. We have applied modern control theory to channel flows as well as two and three-dimensional boundary layers, and Found that now disturbances can be cancelled, transition delayed and low Reynolds number turbulence relarninarized.

Place, publisher, year, edition, pages
Springer, 2006. 59-71 p.
Series
Solid Mechanics and Its Applications, ISSN 0925-0042 ; 129
Keyword [en]
Feedback-Control, Transition, Suction
National Category
Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:kth:diva-94104DOI: 10.1007/978-1-4020-4150-1_6ISI: 000240025700006Scopus ID: 2-s2.0-84884840291ISBN: 1-4020-4149-7 (print)OAI: oai:DiVA.org:kth-94104DiVA: diva2:525334
Conference
One Hundred Years of Boundary Layer Research symposium, Gottingen, Germany, August 12-14, 2004.
Note
QC 20120813Available from: 2012-05-07 Created: 2012-05-07 Last updated: 2012-08-13Bibliographically approved

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Heninngson, Dan S.Hanifi, Ardeshir

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