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Effect of oblique waves on jet turbulence
KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW. KTH, School of Engineering Sciences (SCI), Mechanics, Fluid Physics.ORCID iD: 0000-0002-1663-3553
KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW. KTH, School of Engineering Sciences (SCI), Mechanics, Fluid Physics.ORCID iD: 0000-0002-1146-3241
2010 (English)In: SEVENTH IUTAM SYMPOSIUM ON LAMINAR-TURBULENT TRANSITION / [ed] Schlatter P; Henningson DS, 2010, Vol. 18, 541-544 p.Conference paper, Published paper (Refereed)
Abstract [en]

The paper describes experiments on acoustically excited axisymmetric turbulent jet flows The investigation is based on the hypothesis that so called oblique transition may play a role in the breakdown to turbulence for an axisymmetric jet. For wall bounded flows oblique transition gives rise to steady streamwise streaks that break down to turbulence, as for instance documented by Elofsson & Alfredsson (J Fluid Mech. 358). The scenario of oblique transition has so for not been considered for jet flows and the aim was to study the effect of two oblique modes on the transition scenario as well as on the flow dynamics. Even though it was not possible to detect the presence of streamwise streaks, for a certain range of the excitation frequencies. the turbulence intensity, at a fixed stream wise position, is found to be significantly reduced.

Place, publisher, year, edition, pages
2010. Vol. 18, 541-544 p.
Series
IUTAM Bookseries, 18
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-29874DOI: 10.1007/978-90-481-3723-7_95ISI: 000277097200095Scopus ID: 2-s2.0-84862289707ISBN: 978-90-481-3722-0 (print)OAI: oai:DiVA.org:kth-29874DiVA: diva2:399159
Conference
7th IUTAM Symposium on Laminar-Turbulent Transition, Royal Inst Technol, Stockholm, SWEDEN, JUN 23-26, 2009
Note
QC 20110221Available from: 2011-02-21 Created: 2011-02-17 Last updated: 2011-02-21Bibliographically approved

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Örlü, RamisAlfredsson, P. Henrik

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