Lagrangian velocity and acceleration auto-correlations in rotating turbulence

L. Castello, Del, H.J.H. Clercx

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

1 Citation (Scopus)
38 Downloads (Pure)

Abstract

Rotating turbulence has often been studied by numerical simulations and analytical models. Experimental data is scarce and purely of Eulerian nature. In the present study, experiments on continuously forced turbulence subjected to background rotation are performed by means of 3D Particle Tracking Velocimetry. The data is processed in the Lagrangian as well as in the Eulerian frame. The background rotation is confirmed to induce two-dimensionalisation of the flow field, and the large-scales are dominated by stable counter-rotating vertical tubes of vorticity. The auto-correlation coefficients along particle trajectories of velocity and acceleration components have been explored. We will discuss the effects of rotation on the Lagrangian temporal scales of the flow.
Original languageEnglish
Title of host publicationProceedings of the European Turbulence Conference (ETC 13), September 12-15, 2011, Warsaw, Poland
EditorsK. Bajer
Pages052028/1-9
DOIs
Publication statusPublished - 2011
Eventconference; 13th EUROMECH European Turbulence Conference -
Duration: 1 Jan 2011 → …

Publication series

NameJournal of Physics: Conference Series
Volume318
ISSN (Print)1742-6588

Conference

Conferenceconference; 13th EUROMECH European Turbulence Conference
Period1/01/11 → …
Other13th EUROMECH European Turbulence Conference

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autocorrelation
turbulence
particle trajectories
correlation coefficients
vorticity
flow distribution
counters
tubes
simulation

Cite this

Castello, Del, L., & Clercx, H. J. H. (2011). Lagrangian velocity and acceleration auto-correlations in rotating turbulence. In K. Bajer (Ed.), Proceedings of the European Turbulence Conference (ETC 13), September 12-15, 2011, Warsaw, Poland (pp. 052028/1-9). (Journal of Physics: Conference Series; Vol. 318). https://doi.org/10.1088/1742-6596/318/5/052028
Castello, Del, L. ; Clercx, H.J.H. / Lagrangian velocity and acceleration auto-correlations in rotating turbulence. Proceedings of the European Turbulence Conference (ETC 13), September 12-15, 2011, Warsaw, Poland. editor / K. Bajer. 2011. pp. 052028/1-9 (Journal of Physics: Conference Series).
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abstract = "Rotating turbulence has often been studied by numerical simulations and analytical models. Experimental data is scarce and purely of Eulerian nature. In the present study, experiments on continuously forced turbulence subjected to background rotation are performed by means of 3D Particle Tracking Velocimetry. The data is processed in the Lagrangian as well as in the Eulerian frame. The background rotation is confirmed to induce two-dimensionalisation of the flow field, and the large-scales are dominated by stable counter-rotating vertical tubes of vorticity. The auto-correlation coefficients along particle trajectories of velocity and acceleration components have been explored. We will discuss the effects of rotation on the Lagrangian temporal scales of the flow.",
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Castello, Del, L & Clercx, HJH 2011, Lagrangian velocity and acceleration auto-correlations in rotating turbulence. in K Bajer (ed.), Proceedings of the European Turbulence Conference (ETC 13), September 12-15, 2011, Warsaw, Poland. Journal of Physics: Conference Series, vol. 318, pp. 052028/1-9, conference; 13th EUROMECH European Turbulence Conference, 1/01/11. https://doi.org/10.1088/1742-6596/318/5/052028

Lagrangian velocity and acceleration auto-correlations in rotating turbulence. / Castello, Del, L.; Clercx, H.J.H.

Proceedings of the European Turbulence Conference (ETC 13), September 12-15, 2011, Warsaw, Poland. ed. / K. Bajer. 2011. p. 052028/1-9 (Journal of Physics: Conference Series; Vol. 318).

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

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AU - Clercx, H.J.H.

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N2 - Rotating turbulence has often been studied by numerical simulations and analytical models. Experimental data is scarce and purely of Eulerian nature. In the present study, experiments on continuously forced turbulence subjected to background rotation are performed by means of 3D Particle Tracking Velocimetry. The data is processed in the Lagrangian as well as in the Eulerian frame. The background rotation is confirmed to induce two-dimensionalisation of the flow field, and the large-scales are dominated by stable counter-rotating vertical tubes of vorticity. The auto-correlation coefficients along particle trajectories of velocity and acceleration components have been explored. We will discuss the effects of rotation on the Lagrangian temporal scales of the flow.

AB - Rotating turbulence has often been studied by numerical simulations and analytical models. Experimental data is scarce and purely of Eulerian nature. In the present study, experiments on continuously forced turbulence subjected to background rotation are performed by means of 3D Particle Tracking Velocimetry. The data is processed in the Lagrangian as well as in the Eulerian frame. The background rotation is confirmed to induce two-dimensionalisation of the flow field, and the large-scales are dominated by stable counter-rotating vertical tubes of vorticity. The auto-correlation coefficients along particle trajectories of velocity and acceleration components have been explored. We will discuss the effects of rotation on the Lagrangian temporal scales of the flow.

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Castello, Del L, Clercx HJH. Lagrangian velocity and acceleration auto-correlations in rotating turbulence. In Bajer K, editor, Proceedings of the European Turbulence Conference (ETC 13), September 12-15, 2011, Warsaw, Poland. 2011. p. 052028/1-9. (Journal of Physics: Conference Series). https://doi.org/10.1088/1742-6596/318/5/052028