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Analysis of vortical structures in intermittent jets
KTH, School of Engineering Sciences (SCI), Mechanics.ORCID iD: 0000-0002-7729-3484
KTH, School of Engineering Sciences (SCI), Mechanics.ORCID iD: 0000-0001-7715-863X
KTH, School of Engineering Sciences (SCI), Mechanics.ORCID iD: 0000-0001-9976-8316
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2016 (English)In: Springer Proceedings in Physics, Springer Science+Business Media B.V., 2016, 3-10 p.Conference paper (Refereed)
Abstract [en]

The manipulation of jets has since long been subject to research, due to the wide range of industrial applications in which they are used. A vast number of numerical and experimental studies concerning the physics of the breakup process of continuous jets have been published. Improvements in mixing and ambient gas entrainment have been reported experimentally when using intermittent injection, although the responsible mechanisms have not yet been completely revealed. This work presents a systematic analysis of the mechanisms of jet breakup and mixing with the surrounding fluid and its relation to vorticity generation and transport. Comparisons aremade between the redistribution of vorticity and the engulfment of ambient fluid into the core region for different injection strategies. © Springer International Publishing Switzerland 2016.

Place, publisher, year, edition, pages
Springer Science+Business Media B.V., 2016. 3-10 p.
Keyword [en]
Industrial research, Mixing, Transport properties, Vorticity, Wakes, Ambient fluids, Ambient gas, Continuous jets, Intermittent injection, Numerical and experimental study, Systematic analysis, Vortical structures, Vorticity generation, Fighter aircraft
National Category
Mechanical Engineering
URN: urn:nbn:se:kth:diva-195137DOI: 10.1007/978-3-319-30602-5_1ISI: 000387431400001ScopusID: 2-s2.0-84978998403ISBN: 9783319306001OAI: diva2:1047044
5th International Conference on Jets, Wakes and Separated Flows, ICJWSF2015, 15 June 2015 through 18 June 2015

Correspondence Address: Nygård, A.; Department of Mechanics, KTHSweden; email: QC 20161116

Available from: 2016-11-16 Created: 2016-11-02 Last updated: 2017-01-10Bibliographically approved

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Nygård, AlexanderSemlitsch, BernhardWittberg, L. PrahlFuchs, Laszlo
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