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Linear compensator control of a pointsource induced perturbation in a Falkner-Skan-Cooke boundary layer
KTH, Superseded Departments, Mechanics.ORCID iD: 0000-0001-7864-3071
2003 (English)In: Physics of fluids, ISSN 1070-6631, E-ISSN 1089-7666, Vol. 15, no 8, 2449-2452 p.Article in journal (Refereed) Published
Abstract [en]

We focus on the problem of controlling pointsource induced perturbations on an infinite swept wing using linear control theory. Based on wall measurements in a spatial simulation of localized disturbances in Falkner-Skan-Cooke boundary layers, an extended Kalman filter is used to estimate the full three-dimensional wave packet. The estimated field is in turn used to calculate a feedback control which changes the growth of the disturbance into decay. This is the first time that optimal control and estimation concepts are successfully applied to construct a dynamic output feedback compensator which is used to control disturbances in spatially developing boundary layers.

Place, publisher, year, edition, pages
2003. Vol. 15, no 8, 2449-2452 p.
Keyword [en]
transition, flow
Identifiers
URN: urn:nbn:se:kth:diva-22669DOI: 10.1063/1.1584434ISI: 000184104100037OAI: oai:DiVA.org:kth-22669DiVA: diva2:341367
Note
QC 20100525Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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Henningson, Dan S.

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