3D simulations of shear instabilities in magnetized flows

Abstract

We present results of three-dimensional (3D) simulations of the magnetohydrodynamic Kelvin-Helmholtz instability in a stratified shear layer. The magnetic field is taken to be uniform and parallel to the shear flow. We describe the evolution of the fluid flow and the magnetic field for a range of initial conditions. In particular, we investigate how the mixing rate of the fluid depends on the Richardson number and the magnetic field strength. It was found that the magnetic field can enhance as well as suppress mixing. Moreover, we have performed two-dimensional (2D) simulations and discuss some interesting differences between the 2D and 3D results.

submitted to MNRAS, figures in colour and higher quality at http://www.mpa-garching.mpg.de/~maria/greenreports/mpa00/reports_00.html

References in corpus (3)

• The Magnetohydrodynamic Kelvin-Helmholtz Instability: A Three-Dimensional Study of Nonlinear Evolution
• Mixing through shear instabilities
• The MHD Kelvin-Helmholtz Instability III: The Role of Sheared Magnetic Field in Planar Flows

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