Spectral modeling of magnetohydrodynamic turbulent flows

AMS Citation:
Baerenzung, J., H. Politano, Y. Ponty, and A. Pouquet, 2008: Spectral modeling of magnetohydrodynamic turbulent flows. Physical Review E, 78, 026310, doi:10.1103/PhysRevE.78.026310.
Date:2008-08-29
Resource Type:article
Title:Spectral modeling of magnetohydrodynamic turbulent flows
Abstract: We present a dynamical spectral model for large-eddy simulation of the incompressible magnetohydrodynamic (MHD) equations based on the eddy damped quasinormal Markovian approximation. This model extends classical spectral large-eddy simulations for the Navier-Stokes equations to incorporate general (non-Kolmogorovian) spectra as well as eddy noise. We derive the model for MHD flows and show that the introduction of an eddy damping time for the dynamics of spectral tensors, in the absence of equipartition between the velocity and magnetic fields, leads to better agreement with direct numerical simulations, an important point for dynamo computations.
Peer Review:Refereed
Copyright Information:Copyright 2008 American Physical Society.
OpenSky citable URL: ark:/85065/d7q81d7w
Publisher's Version: 10.1103/PhysRevE.78.026310
Author(s):
  • Julien Baerenzung - NCAR/UCAR
  • Héléne Politano
  • Yannick Ponty
  • Annick Pouquet - NCAR/UCAR
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