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Information Theory Analysis of Cascading Process in a Synthetic Model of Fluid Turbulence

Massimo Materassi, Giuseppe Consolini, Nathan Smith, Rossana De Marco
2014 Entropy  
This new normalized transfer entropy is applied to the detection of the verse of energy flux transfer in a synthetic model of fluid turbulence, namely the Gledzer-Ohkitana-Yamada shell model.  ...  that the application of the information-theory analysis to its outcome tests the reliability of the analysis tool rather than exploring the model physics.  ...  In the chosen example, the IDQs are used to recognize the existence of cascades in a synthetic model of fluid turbulence [29, 30] . Some theoretical considerations are worth being done in advance.  ... 
doi:10.3390/e16031272 fatcat:25mljbcivbcmrmdzdebb7qy5xi

Astrophysical MHD turbulence: confluence of observations, simulations, and theory

Blakesley Burkhart, Alex Lazarian
2012 Proceedings of the International Astronomical Union  
In order to gain understanding of how MHD turbulence regulates processes in the Galaxy, a confluence of numerics, observations and theory must be imployed.  ...  AbstractMagnetohydrodynamic (MHD) turbulence is a critical component of the current paradigms of star formation, dynamo theory, particle transport, magnetic reconnection and evolution of the ISM.  ...  Both authors are grateful to the Center for Magnetic Self-Organization in Astrophysical and Laboratory Plasmas for financial support.  ... 
doi:10.1017/s1743921313002718 fatcat:wxp76hrwknblxosuxknbv7vpl4

Using The Velocity Anisotropy Technique To Investigate Interstellar Magnetohydrodynamic Turbulence

Missy McIntosh, Blakesley Burkhart
2016 Zenodo  
We then apply the VAT to 12CO and 13CO emission line observations of the Taurus Molecular Cloud, and compare results with that of a principal component analysis (PCA) technique detailed in Heyer & Brunt  ...  As a preface to and to supply context for the VAT and its usefulness, we first overview the ISM, turbulence, MHD turbulence in the ISM, and the interstellar magnetic field.  ...  ) but more easily illustrated scale relations in the energy cascade (Ball 2014 (1996) for more information on their theory.  ... 
doi:10.5281/zenodo.50082 fatcat:jmhbrrr7sjccne6nte6i5pfuee

Diagnosing Turbulence in the Neutral and Molecular Interstellar Medium of Galaxies [article]

Blakesley Burkhart
2021 arXiv   pre-print
In particular, we will review statistical diagnostics and machine learning algorithms that have been developed for observational data sets in order to obtain information about the turbulence cascade, fluid  ...  Magnetohydrodynamic (MHD) turbulence is a crucial component of the current paradigms of star formation, dynamo theory, particle transport, magnetic reconnection and evolution of structure in the interstellar  ...  INTRODUCTION: THE TURBULENT UNIVERSE Turbulence, a physical phenomenon in which a flow devolves into a cascade of swirls and eddies, is a ubiquitous state of both terrestrial and astrophysical fluids  ... 
arXiv:2106.02239v1 fatcat:rfs4cc3hyrgd7gsqctvtnpqsem

DAMPING OF MAGNETOHYDRODYNAMIC TURBULENCE IN PARTIALLY IONIZED GAS AND THE OBSERVED DIFFERENCE OF VELOCITIES OF NEUTRALS AND IONS

D. Falceta-Gonçalves, A. Lazarian, M. Houde
2010 Astrophysical Journal  
The theory of supersonic magnetized turbulence, as well as the understanding of projection effects of observed quantities, are still in progress.  ...  In this work we explore the characterization of the turbulent cascade and its damping from observational spectral line profiles.  ...  Turbulence in Partially Ionized Gas Challenge of interstellar turbulence In 1941, Kolmogorov proposed the well-known theory for energy cascade in incompressible fluids.  ... 
doi:10.1088/0004-637x/713/2/1376 fatcat:jmtdsofmprcvdmhyvidg7szy5e

Kullback-Leibler divergence measure of intermittency: Application to turbulence

Carlos Granero-Belinchón, Stéphane G. Roux, Nicolas B. Garnier
2018 Physical review. E  
We compute our measure on experimental Eulerian velocity measurements, as well as on synthetic processes and a phenomenological model of fluid turbulence.Our approach is very general and does not require  ...  any underlying model of the system, although it can probe the relevance of such a model.  ...  This work was supported by the LABEX iMUST (ANR-10-LABX-0064) of Université de Lyon, within the program "Investissements d'Avenir" (ANR-11-IDEX-0007) operated by the French National Research Agency (ANR  ... 
doi:10.1103/physreve.97.013107 pmid:29448390 fatcat:um7qwmvd2vhe5iurcoi6xz2apm

Multiscale correlation functions in strong turbulence

Jahanshah Davoudi, M. Reza Rahimi Tabar
2000 Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics  
Yakhot [Phys.Rev.E, 57, 1737 (1998)] modelling of intermittent structure functions in fully developed turbulence and based on the experimentally supported Markovian nature of turbulence cascades [R.Friedrich  ...  Under the framework of V.  ...  M.R.R.T. thanks the French Ministry of Education, Research, and Technology for support during his visit to the the Observatoire de la Côte d'Azur, and U. Frisch for his kind hospitality.  ... 
doi:10.1103/physreve.61.6563 pmid:11088336 fatcat:4wy4ujzvbzguzlukvvj7ko7x3q

Measurement of MHD Turbulence Properties by Synchrotron Radiation Techniques

Jian-Fu Zhang, Ru-Yue Wang
2022 Frontiers in Astronomy and Space Sciences  
The correct understanding of the fundamental properties of MHD turbulence is a pre-requisite for revealing many key astrophysical processes.  ...  The development of observation-based measurement techniques has significantly promoted MHD turbulence theory and its implications in astrophysics.  ...  AUTHOR CONTRIBUTIONS All authors listed have made a substantial contribution to the work and approved it for publication.  ... 
doi:10.3389/fspas.2022.869370 fatcat:bvxtau4tc5bxtcodrrvjksvgmq

Measurement of MHD turbulence properties by synchrotron radiation techniques [article]

Jianfu Zhang
2022 arXiv   pre-print
The correct understanding of the fundamental properties of MHD turbulence is a prerequisite for revealing many key astrophysical processes.  ...  The development of observation-based measurement techniques has significantly promoted MHD turbulence theory and its implications in astrophysics.  ...  AUTHOR CONTRIBUTIONS All authors listed have made a substantial contribution to the work and approved it for publication.  ... 
arXiv:2203.09154v1 fatcat:qpa4qkassvcdbb3djs6m57y6cq

USING SYNTHETIC SPACECRAFT DATA TO INTERPRET COMPRESSIBLE FLUCTUATIONS IN SOLAR WIND TURBULENCE

K. G. Klein, G. G. Howes, J. M. TenBarge, S. D. Bale, C. H. K. Chen, C. S. Salem
2012 Astrophysical Journal  
Kinetic plasma theory is used to generate synthetic spacecraft data to analyze and interpret the compressible fluctuations in the inertial range of solar wind turbulence.  ...  The construction of synthetic spacecraft data, based on the quasi-linear premise---that some characteristics of magnetized plasma turbulence can be usefully modeled as a collection of randomly phased,  ...  Analysis of nonlinear numerical simulations of plasma turbulence using gyrokinetics (Howes et al. 2008b; ) and both Hall MHD and Landau fluid theory (Hunana et al. 2011) , as well as observational analysis  ... 
doi:10.1088/0004-637x/755/2/159 fatcat:kgacomgopreelge3dzlqvch2s4

Coherence, space non-locality and lacunarity in a cascade model of turbulence [article]

Piero Olla, Paolo Paradisi (FISBAT-CNR, Bologna, Italy)
1998 arXiv   pre-print
The relevance of these techniques in turbulence theory is discussed.  ...  These properties are parametrized in terms of a set of scale ratios, giving the typical interaction distances in space and scale of the random field fluctuations, and the characteristic lengths over which  ...  Synthetic turbulence has no pretense of modelling turbulence dynamics, its goal being more the one of reproducing the statistics observed in experimental turbulence data.  ... 
arXiv:chao-dyn/9804029v1 fatcat:zgrvcnlzsnck3as7ov4zwp4ex4

Characterization of local turbulence in magnetic confinement devices

Milan Rajković, Miloš Škorić, Knut Sølna, Ghassan Antar
2008 Nuclear Fusion  
A multifractal analysis based on evaluation and interpretation of large deviation spectra is applied to plasma edge turbulence data from different devices (MAST and Tore Supra).  ...  In this manner information about the inertial range as well as variability of the fBm parameters is obtained giving more information important for understanding edge turbulence and intermittency.  ...  Authors M.R. and M.S. also acknowledge partial funding by the Serbian Ministry of Science under grants OI 144022 and OI 141034, respectively.  ... 
doi:10.1088/0029-5515/48/2/024016 fatcat:cp2gesbrxvcx3ftysuwezwd6uu

Universal hierarchical symmetry for turbulence and general multi-scale fluctuation systems

Zhen-Su She, Zhi-Xiong Zhang
2009 Acta Mechanica Sinica  
A number of modified scaling laws have been derived in the framework of the hierarchical symmetry, and the SL model parameters are found to reveal both the organizational order of the whole system and  ...  It is suggested that the SL hierarchical symmetry is a new form of the self-organization principle for multi-scale fluctuation systems, and can be employed as a standard analysis tool in the general multi-scale  ...  Open Access This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided  ... 
doi:10.1007/s10409-009-0257-3 fatcat:xrkkcpm7l5g7nno5wu7g2jbsvm

Model for intermittency of energy dissipation in turbulent flows

Fabio Lepreti, Vincenzo Carbone, Pierluigi Veltri
2006 Physical Review E  
impulsive energy release processes can be associated to the dynamics of the turbulent cascade.  ...  Modeling the intermittent behavior of turbulent energy dissipation processes both in space and time is often a relevant problem when dealing with phenomena occurring in high Reynolds number flows, especially  ...  properties of the turbulent energy cascade process.  ... 
doi:10.1103/physreve.74.026306 pmid:17025538 fatcat:souhajqkyrhf3bx3nqdp2o6fzu

Direct Measurement of the Dissipation Rate Spectrum around Ion Kinetic Scales in Space Plasma Turbulence

Jiansen He, Die Duan, Tieyan Wang, Xingyu Zhu, Wenya Li, Daniel Verscharen, Xin Wang, Chuanyi Tu, Yuri Khotyaintsev, Guan Le, Jim Burch
2019 Astrophysical Journal  
The energy of turbulence in the universe, which cascades from large fluid scales to small kinetic scales, is believed to be dissipated through conversion to thermal or nonthermal kinetic energy.  ...  This work provides basic information on local dissipation in magnetosheath turbulence and sets up a new paradigm for studying the dissipation of universal plasma turbulence.  ...  The analysis results from the modeled synthetic spacecraft data strongly suggest that the turbulence dissipation rate spectrum revealed by MMS data is credible and valuable.  ... 
doi:10.3847/1538-4357/ab2a79 fatcat:rcfitzuhfjeknjpn62jrh7v5v4
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