Time decorrelation in isotropic magnetohydrodynamic turbulence

Time decorrelation in isotropic incompressible magnetohydrodynamic (MHD) turbulence is studied using three-dimensional numerical simulation. Eulerian and wavenumber-dependent correlation functions are obtained. Scaling with wavenumber separates effects of nonlinear distortion and effects of random s...

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Autor principal: Dmitruk, Pablo Ariel
Publicado: 2011
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02955075_v96_n5_p_Servidio
http://hdl.handle.net/20.500.12110/paper_02955075_v96_n5_p_Servidio
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_02955075_v96_n5_p_Servidio
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spelling paper:paper_02955075_v96_n5_p_Servidio2023-06-08T15:27:13Z Time decorrelation in isotropic magnetohydrodynamic turbulence Dmitruk, Pablo Ariel Time decorrelation in isotropic incompressible magnetohydrodynamic (MHD) turbulence is studied using three-dimensional numerical simulation. Eulerian and wavenumber-dependent correlation functions are obtained. Scaling with wavenumber separates effects of nonlinear distortion and effects of random sweeping and Alfvénic wave propagation. Results show that the dominant effect is the combined influence of convective sweeping and Alfvénic propagation, both being nonlocal effects on small-scale fluctuations by large-scale fluctuations. This conclusion finds applications in space plasma observation, particle scattering, predictability, and turbulence theory. © Europhysics Letters Association. Fil:Dmitruk, P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2011 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02955075_v96_n5_p_Servidio http://hdl.handle.net/20.500.12110/paper_02955075_v96_n5_p_Servidio
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description Time decorrelation in isotropic incompressible magnetohydrodynamic (MHD) turbulence is studied using three-dimensional numerical simulation. Eulerian and wavenumber-dependent correlation functions are obtained. Scaling with wavenumber separates effects of nonlinear distortion and effects of random sweeping and Alfvénic wave propagation. Results show that the dominant effect is the combined influence of convective sweeping and Alfvénic propagation, both being nonlocal effects on small-scale fluctuations by large-scale fluctuations. This conclusion finds applications in space plasma observation, particle scattering, predictability, and turbulence theory. © Europhysics Letters Association.
author Dmitruk, Pablo Ariel
spellingShingle Dmitruk, Pablo Ariel
Time decorrelation in isotropic magnetohydrodynamic turbulence
author_facet Dmitruk, Pablo Ariel
author_sort Dmitruk, Pablo Ariel
title Time decorrelation in isotropic magnetohydrodynamic turbulence
title_short Time decorrelation in isotropic magnetohydrodynamic turbulence
title_full Time decorrelation in isotropic magnetohydrodynamic turbulence
title_fullStr Time decorrelation in isotropic magnetohydrodynamic turbulence
title_full_unstemmed Time decorrelation in isotropic magnetohydrodynamic turbulence
title_sort time decorrelation in isotropic magnetohydrodynamic turbulence
publishDate 2011
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02955075_v96_n5_p_Servidio
http://hdl.handle.net/20.500.12110/paper_02955075_v96_n5_p_Servidio
work_keys_str_mv AT dmitrukpabloariel timedecorrelationinisotropicmagnetohydrodynamicturbulence
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