Intermittency in Hall-magnetohydrodynamics with a strong guide field

We present a detailed study of intermittency in the velocity and magnetic field fluctuations of compressible Hall-magnetohydrodynamic turbulence with an external guide field. To solve the equations numerically, a reduced model valid when a strong guide field is present is used. Different values for...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Dmitruk, Pablo Ariel, Mininni, Pablo Daniel
Publicado:	2013
Materias:	Building structure Field fluctuations Intermittency Ion skin depth Magnetic field fluctuations Monofractal Reduced model Velocity field Kinetic theory Magnetic fields Probability density function Velocity Magnetohydrodynamics
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1070664X_v20_n5_p_RodriguezImazio http://hdl.handle.net/20.500.12110/paper_1070664X_v20_n5_p_RodriguezImazio
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_1070664X_v20_n5_p_RodriguezImazio
record_format	dspace
spelling	paper:paper_1070664X_v20_n5_p_RodriguezImazio2023-06-08T16:04:38Z Intermittency in Hall-magnetohydrodynamics with a strong guide field Dmitruk, Pablo Ariel Mininni, Pablo Daniel Building structure Field fluctuations Intermittency Ion skin depth Magnetic field fluctuations Monofractal Reduced model Velocity field Kinetic theory Magnetic fields Probability density function Velocity Magnetohydrodynamics We present a detailed study of intermittency in the velocity and magnetic field fluctuations of compressible Hall-magnetohydrodynamic turbulence with an external guide field. To solve the equations numerically, a reduced model valid when a strong guide field is present is used. Different values for the ion skin depth are considered in the simulations. The resulting data are analyzed computing field increments in several directions perpendicular to the guide field, and building structure functions and probability density functions. In the magnetohydrodynamic limit, we recover the usual results with the magnetic field being more intermittent than the velocity field. In the presence of the Hall effect, field fluctuations at scales smaller than the ion skin depth show a substantial decrease in the level of intermittency, with close to monofractal scaling. © 2013 AIP Publishing LLC. Fil:Dmitruk, P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Mininni, P.D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2013 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1070664X_v20_n5_p_RodriguezImazio http://hdl.handle.net/20.500.12110/paper_1070664X_v20_n5_p_RodriguezImazio
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Building structure Field fluctuations Intermittency Ion skin depth Magnetic field fluctuations Monofractal Reduced model Velocity field Kinetic theory Magnetic fields Probability density function Velocity Magnetohydrodynamics
spellingShingle	Building structure Field fluctuations Intermittency Ion skin depth Magnetic field fluctuations Monofractal Reduced model Velocity field Kinetic theory Magnetic fields Probability density function Velocity Magnetohydrodynamics Dmitruk, Pablo Ariel Mininni, Pablo Daniel Intermittency in Hall-magnetohydrodynamics with a strong guide field
topic_facet	Building structure Field fluctuations Intermittency Ion skin depth Magnetic field fluctuations Monofractal Reduced model Velocity field Kinetic theory Magnetic fields Probability density function Velocity Magnetohydrodynamics
description	We present a detailed study of intermittency in the velocity and magnetic field fluctuations of compressible Hall-magnetohydrodynamic turbulence with an external guide field. To solve the equations numerically, a reduced model valid when a strong guide field is present is used. Different values for the ion skin depth are considered in the simulations. The resulting data are analyzed computing field increments in several directions perpendicular to the guide field, and building structure functions and probability density functions. In the magnetohydrodynamic limit, we recover the usual results with the magnetic field being more intermittent than the velocity field. In the presence of the Hall effect, field fluctuations at scales smaller than the ion skin depth show a substantial decrease in the level of intermittency, with close to monofractal scaling. © 2013 AIP Publishing LLC.
author	Dmitruk, Pablo Ariel Mininni, Pablo Daniel
author_facet	Dmitruk, Pablo Ariel Mininni, Pablo Daniel
author_sort	Dmitruk, Pablo Ariel
title	Intermittency in Hall-magnetohydrodynamics with a strong guide field
title_short	Intermittency in Hall-magnetohydrodynamics with a strong guide field
title_full	Intermittency in Hall-magnetohydrodynamics with a strong guide field
title_fullStr	Intermittency in Hall-magnetohydrodynamics with a strong guide field
title_full_unstemmed	Intermittency in Hall-magnetohydrodynamics with a strong guide field
title_sort	intermittency in hall-magnetohydrodynamics with a strong guide field
publishDate	2013
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1070664X_v20_n5_p_RodriguezImazio http://hdl.handle.net/20.500.12110/paper_1070664X_v20_n5_p_RodriguezImazio
work_keys_str_mv	AT dmitrukpabloariel intermittencyinhallmagnetohydrodynamicswithastrongguidefield AT mininnipablodaniel intermittencyinhallmagnetohydrodynamicswithastrongguidefield
_version_	1768545611671404544

Intermittency in Hall-magnetohydrodynamics with a strong guide field

Ejemplares similares