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Input-output analysis and control design of spatially developing shear flows
KTH, School of Engineering Sciences (SCI), Mechanics. KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW.ORCID iD: 0000-0002-8209-1449
KTH, School of Engineering Sciences (SCI), Mechanics. KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW.
KTH, School of Engineering Sciences (SCI), Mechanics. KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW.ORCID iD: 0000-0002-4346-4732
KTH, School of Engineering Sciences (SCI), Mechanics. KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW.ORCID iD: 0000-0001-7864-3071
2008 (English)In: 5th AIAA Theoretical Fluid Mechanics Conference, 2008Conference paper, Published paper (Refereed)
Abstract [en]

A framework for the input-output analysis, model reduction and control design of spatially developing shear flows is presented using the Blasius boundary-layer flow as an example. An input-output formulation of the governing equations yields a flexible formulation for treating stability problems and for developing control strategies that optimize given objectives. Model reduction plays an important role in this process since the dynamical systems that describe most flows are discretized partial differential equations with a very large number of degrees of freedom. Moreover, as system theoretical tools, such as controllability, observability and balancing has become computationally tractable for large-scale systems, a systematic approach to model reduction is presented.

Place, publisher, year, edition, pages
2008.
Keyword [en]
Blasius, Control design, Control strategies, Governing equations, Input output analysis, Input-output, Model reduction, Number of degrees of freedom, Stability problem, Contacts (fluid mechanics), Differential equations, Dynamical systems, Shear flow, Fluid mechanics
National Category
Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:kth:diva-153982Scopus ID: 2-s2.0-78049321547ISBN: 9781563479427 (print)OAI: oai:DiVA.org:kth-153982DiVA: diva2:762032
Conference
5th AIAA Theoretical Fluid Mechanics Conference, 23 June 2008 through 26 June 2008, Seattle, WA, United States
Note

QC 20141110

Available from: 2014-11-10 Created: 2014-10-10 Last updated: 2014-11-10Bibliographically approved

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Bagheri, ShervinBrandt, LucaHenningson, Dan Stefan

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