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  Long time memory of Lagrangian acceleration statistics in 2D and 3D turbulence

Kamps, O., & Wilczek, M. (2011). Long time memory of Lagrangian acceleration statistics in 2D and 3D turbulence. In 13TH European Turbulence Conference (ETC13): Particles in Turbulence, Transport Processes and Mixing. Bristol, England: IOP Publishing ltd.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0003-E09A-2 Version Permalink: https://hdl.handle.net/21.11116/0000-0003-E09B-1
Genre: Conference Paper

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 Creators:
Kamps, Oliver, Author
Wilczek, Michael1, Author           
Affiliations:
1Max Planck Research Group Theory of Turbulent Flows, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society, ou_2266693              

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 Abstract: In this paper we report on a comparison of Lagrangian acceleration
statistics in the direct energy cascade of three-dimensional turbulence
and the corresponding observables for the case of the inverse energy
cascade in two dimensions. We focus on the time scales describing the
memory of the acceleration statistics of a tracer particle. We show that
for both systems the Markov time scale, which is an indicator for the
length of the memory of a stochastic process, is in the order of
magnitude of the Lagrangian integral time scale. We also show that the
decorrelation time for the cross-correlation between the squared
components of the acceleration is larger than the integral time scale.

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Language(s): eng - English
 Dates: 2011
 Publication Status: Issued
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 Rev. Type: Peer
 Identifiers: DOI: 10.1088/1742-6596/318/5/052033
BibTex Citekey: ISI:000301293000033
 Degree: -

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Title: 13TH European Turbulence Conference (ETC13): Particles in Turbulence, Transport Processes and Mixing
Source Genre: Proceedings
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Publ. Info: Bristol, England : IOP Publishing ltd
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: - Identifier: -

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Title: Journal of Physics Conference Series
Source Genre: Series
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Pages: - Volume / Issue: 318 Sequence Number: 052033 Start / End Page: - Identifier: -