Three-dimensional evolution of magnetic and velocity shear driven instabilities in a compressible magnetized jet

Abstract

The problem of three-dimensional combined magnetic and velocity shear driven instabilities of a compressible magnetized jet modeled with a plane neutral/current double vortex sheet in the framework of the resistive magnetohydrodynamics is addressed. The resulting dynamics given by the stream+current sheet interaction is analyzed and the effects of a variable geometry of the basic fields are considered. Depending on the basic asymptotic magnetic field configuration, a selection rule of the linear instability modes can be obtained. Hence, the system follows a two-stage path developing either through a fully three-dimensional dynamics with a rapid evolution of kink modes leading to a final turbulent state, or rather through a driving two-dimensional instability pattern that develops on parallel planes on which a reconnection+coalescence process takes place.

33 pages, 15 figures, accepted for publication in Physics of Plasmas

References in corpus (2)

• ECHO: an Eulerian Conservative High Order scheme for general relativistic magnetohydrodynamics and magnetodynamics
• Diamagnetic and Expansion Effects on the Observable Properties of the Slow Solar Wind in a Coronal Streamer

Cited by in corpus (6)

• Kelvin-Helmholtz instability of a coronal streamer
• Spontaneous transition to a fast 3D turbulent reconnection regime
• Numerical simulations of Kelvin-Helmholtz instability: a two-dimensional parametric study
• The "ideal" tearing mode: theory and resistive MHD simulations
• Particle-in-cell simulation study of the scaling of asymmetric magnetic reconnection with in-plane flow shear
• Activation of MHD reconnection on ideal timescales