An alternative approach to Direct Numerical Simulations (DNS) of Magnetohydrodynamics (MHD) is presented, providing insight into the statistical properties of highly-turbulent, intermittent, anisotropic MHD turbulence: a set of shell-models coupled by Alfvén waves travelling along the axial magnetic field and which interact non-linearly, producing perpendicular fluctuations of the fields at small scales. This model can be applied to different physical situations; we present the cases of heating in solar coronal loops, and of turbulence in open coronal regions at the base of the solar wind.
Turbulence in anisotropic heliospheric plasmas / E. Buchlin;A. Verdini;P. J. Cargill;M. Velli. - ELETTRONICO. - (2008), pp. 547-561. (Intervento presentato al convegno Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics nel 2008-#nov#).
Turbulence in anisotropic heliospheric plasmas
VERDINI, ANDREA;VELLI, MARCO
2008
Abstract
An alternative approach to Direct Numerical Simulations (DNS) of Magnetohydrodynamics (MHD) is presented, providing insight into the statistical properties of highly-turbulent, intermittent, anisotropic MHD turbulence: a set of shell-models coupled by Alfvén waves travelling along the axial magnetic field and which interact non-linearly, producing perpendicular fluctuations of the fields at small scales. This model can be applied to different physical situations; we present the cases of heating in solar coronal loops, and of turbulence in open coronal regions at the base of the solar wind.I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.