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

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 language	English
Title of host publication	Proceedings of the 5th International Conference on Jets, Wakes and Separated Flows, ICJWSF 2015
Editors	Antonio Segalini
Publisher	Springer Science and Business Media, LLC
Pages	43-50
Number of pages	8
ISBN (Print)	9783319306001
DOIs	https://doi.org/10.1007/978-3-319-30602-5_6
Publication status	Published - 1 Jan 2016
Externally published	Yes
Event	5th International Conference on Jets, Wakes and Separated Flows, ICJWSF2015 - Stockholm, Sweden Duration: 15 Jun 2015 → 18 Jun 2015

Publication series

Name	Springer Proceedings in Physics
Volume	185
ISSN (Print)	0930-8989
ISSN (Electronic)	1867-4941

Conference

Conference	5th International Conference on Jets, Wakes and Separated Flows, ICJWSF2015
Country	Sweden
City	Stockholm
Period	15.6.15 → 18.6.15

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1007/978-3-319-30602-5_6

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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

Coherent structures in a turbulent swirling jet under vortex breakdown. 3D PIV measurements. / Alekseenko, Sergey V.; Dulin, Vladimir M.; Tokarev, M. P.; Markovich, Dmitriy M.

Proceedings of the 5th International Conference on Jets, Wakes and Separated Flows, ICJWSF 2015. ed. / Antonio Segalini. Springer Science and Business Media, LLC, 2016. p. 43-50 (Springer Proceedings in Physics; Vol. 185).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Alekseenko, SV, Dulin, VM, Tokarev, MP & Markovich, DM 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. Springer Proceedings in Physics, vol. 185, Springer Science and Business Media, LLC, pp. 43-50, 5th International Conference on Jets, Wakes and Separated Flows, ICJWSF2015, Stockholm, Sweden, 15.6.15. https://doi.org/10.1007/978-3-319-30602-5_6

Alekseenko SV, Dulin VM, Tokarev MP, Markovich DM. Coherent structures in a turbulent swirling jet under vortex breakdown. 3D PIV measurements. In Segalini A, editor, Proceedings of the 5th International Conference on Jets, Wakes and Separated Flows, ICJWSF 2015. Springer Science and Business Media, LLC. 2016. p. 43-50. (Springer Proceedings in Physics). https://doi.org/10.1007/978-3-319-30602-5_6

Alekseenko, Sergey V. ; Dulin, Vladimir M. ; Tokarev, M. P. ; Markovich, Dmitriy M. / Coherent structures in a turbulent swirling jet under vortex breakdown. 3D PIV measurements. Proceedings of the 5th International Conference on Jets, Wakes and Separated Flows, ICJWSF 2015. editor / Antonio Segalini. Springer Science and Business Media, LLC, 2016. pp. 43-50 (Springer Proceedings in Physics).

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