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Passive control of mixing in a coaxial jet
KTH, School of Engineering Sciences (SCI), Mechanics. KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW.ORCID iD: 0000-0002-1663-3553
KTH, School of Engineering Sciences (SCI), Mechanics. KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW.ORCID iD: 0000-0001-8667-0520
KTH, School of Engineering Sciences (SCI), Mechanics. KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW.ORCID iD: 0000-0002-1146-3241
KTH, School of Engineering Sciences (SCI), Mechanics. KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW.
2008 (English)In: Proc. 7th Int. ERCOFTAC Symp. on Engineering Turbulence Modelling and Measurements (ETMM7), 2008, 450-455 p.Conference paper, Published paper (Refereed)
Abstract [en]

An experimental investigation regarding interacting shear layers in a coaxial jet geometry has been performed. The present paper confirms experimentally the theoretical result by Talamelli and Gavarini (2006), who proposed that the wake behind the separation wall between the two stream of a coaxial jet creates the condition for an absolute instability. This instability, by means of the induced vortex shedding, may provide a continuous forcing mechanism for the control of the flow field. The potential of this passive mechanism as an easy, effective and practical way to control the near-field of interacting shear layers has been demonstrated.

Place, publisher, year, edition, pages
2008. 450-455 p.
National Category
Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:kth:diva-83161OAI: oai:DiVA.org:kth-83161DiVA: diva2:498755
Conference
7th Int. ERCOFTAC Symp. on Engineering Turbulence Modelling and Measurements. Limassol, Cyprus. 4 – 6 June 2008
Note
QC 20120510Available from: 2012-02-12 Created: 2012-02-12 Last updated: 2012-05-10Bibliographically approved

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Örlü, RamisSegalini, AntonioAlfredsson, P. Henrik

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Örlü, RamisSegalini, AntonioAlfredsson, P. HenrikTalamelli, Alessandro
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