Open-loop control of compressible afterbody flows using adjoint methods

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Abstract

We present the theoretical study of a compressible afterbody flow in the subsonic regime. We use sensitivity analyses developed in the framework of the linear global stability theory to predict beforehand the effect of a steady bulk and wall forcing on the growth rate of linear global modes. The sensitivity functions are derived analytically using adjoint methods, and presented for the global mode responsible for the onset of a periodic regime. Our results show that the global mode is sensitive to momentum forcing along the separation line, or to a localized heating in the core of the recirculating bubble.

Original languageEnglish
Title of host publication7th IUTAM Symposium on Laminar-Turbulent Transition - Proceedings of the 7th IUTAM Symposium on Laminar-Turbulent Transition
PublisherSpringer Verlag
Pages283-288
Number of pages6
ISBN (Print)9789048137220
DOIs
Publication statusPublished - 1 Jan 2010
Event7th IUTAM Symposium on Laminar-Turbulent Transition - Stockholm, Sweden
Duration: 23 Jun 200926 Jun 2009

Publication series

NameIUTAM Bookseries
Volume18
ISSN (Print)1875-3507

Conference

Conference7th IUTAM Symposium on Laminar-Turbulent Transition
Country/TerritorySweden
CityStockholm
Period23/06/0926/06/09

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