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Lagrangian intermittency based on an ensemble of Gaussian velocity time series

Title data

Lukassen, Laura J. ; Wilczek, Michael:
Lagrangian intermittency based on an ensemble of Gaussian velocity time series.
In: Örlü, Ramis ; Talamelli, Alessandro ; Oberlack, Martin ; Peinke, Joachim (ed.): Progress in Turbulence VII : Proceedings of the iTi Conference in Turbulence 2016. - Cham, Switzerland : Springer , 2017 . - pp. 23-29 . - (Springer Proceedings in Physics ; 196 )
ISBN 978-3-319-57933-7
DOI: https://doi.org/10.1007/978-3-319-57934-4_4

Abstract in another language

We show that Lagrangian intermittency in fully developed turbulence can be captured in terms of an ensemble of Gaussian velocity time series. This is achieved by letting the individual ensemble members vary with respect to their correlation function.We briefly discuss howthis can be analytically captured in terms of a suitably defined characteristic functional. Moreover, we present a numerical implementation of the ensemble showing a continuous change from Gaussian to non-Gaussian increment distributions for a decreasing time lag. In an outlook we show first results on the application to data from direct numerical simulation

Further data

Item Type: Article in a book
Refereed: Yes
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Theoretical Physics I > Chair Theoretical Physics I - Univ.-Prof. Dr. Michael Wilczek
Profile Fields > Advanced Fields > Nonlinear Dynamics
Result of work at the UBT: No
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 18 Feb 2022 09:15
Last Modified: 18 Feb 2022 09:15
URI: https://eref.uni-bayreuth.de/id/eprint/67575