Coherent structures in a turbulent swirling jet under vortex breakdown. 3D PIV measurements

Sergey V. Alekseenko, Vladimir M. Dulin, M. P. Tokarev, Dmitriy M. Markovich

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

The current study reports on spatial structure of a global mode of self-sustaining oscillations in a turbulent swirling jet under vortex breakdown conditions. Ensembles of 2D and 3D velocity fields were measured by stereoscopic and tomographic PIV systems, respectively, and were analysed via proper orthogonal decomposition. For the 2D PIV, the spatial resolution was sufficient to resolve most of the turbulent kinetic energy of the turbulent flow. The resolution in the case of tomographic PIV was lower, but the 3D instantaneous velocity fields unambiguously revealing that the global mode corresponds to a spiralling structure, counter-winded to the direction of the jet swirl.

Original languageEnglish
Title of host publicationProceedings of the 5th International Conference on Jets, Wakes and Separated Flows, ICJWSF 2015
EditorsAntonio Segalini
PublisherSpringer Science and Business Media, LLC
Pages43-50
Number of pages8
ISBN (Print)9783319306001
DOIs
Publication statusPublished - 1 Jan 2016
Externally publishedYes
Event5th International Conference on Jets, Wakes and Separated Flows, ICJWSF2015 - Stockholm, Sweden
Duration: 15 Jun 201518 Jun 2015

Publication series

NameSpringer Proceedings in Physics
Volume185
ISSN (Print)0930-8989
ISSN (Electronic)1867-4941

Conference

Conference5th International Conference on Jets, Wakes and Separated Flows, ICJWSF2015
CountrySweden
CityStockholm
Period15.6.1518.6.15

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Alekseenko, S. V., Dulin, V. M., Tokarev, M. P., & Markovich, D. M. (2016). Coherent structures in a turbulent swirling jet under vortex breakdown. 3D PIV measurements. In A. Segalini (Ed.), Proceedings of the 5th International Conference on Jets, Wakes and Separated Flows, ICJWSF 2015 (pp. 43-50). (Springer Proceedings in Physics; Vol. 185). Springer Science and Business Media, LLC. https://doi.org/10.1007/978-3-319-30602-5_6