Kelvin-Helmholtz instabilities of high-velocity magnetized shear layers with generalized polytrope laws

Kelvin-Helmholtz Instabilities

Kelvin - Helmholtz instabilities across periodic plates

We consider the linear stability of two inviscid fluids, in the presence of gravity, sheared past each other and separated by an flexible plate. Conditions for exponential growth of velocity perturbations are found as functions of the flexural rigidity of the plate and the shear rate. This Kelvin-Helmholtz instability is then analysed in the presence of plates with spatially periodic (with peri...

Parallel Flow Velocity Shear Kelvin Helmholtz Instability with Ac Electric Field

Electrostatic velocity shear Kelvin-Helmholtz instability has been studied for bi-Maxwellian plasma in the presence of perpendicular a.c. electric field by using the method of characteristic solution. The effects of a.c. electric field temperature variation, velocity shear scale length, electron ion temperature ratio and other parameters on growth rate have been discussed.

The survival of interstellar clouds against Kelvin–Helmholtz instabilities

We consider the stability of clouds surrounded by a hotter confining medium with respect to which they are in motion, against Kelvin–Helmholtz instabilities (KHI). In the presence of cooling, sound waves are damped by dissipation. Whenever cooling times are shorter than sound crossing times, as they are in the normal interstellar medium, this implies that the instability generated at the interf...

Kelvin-Helmholtz instabilities of relativistic magnetohydrodynamic planar flows

Aims. We investigate the stability properties of the interface separating two relativistic magnetized fluids in relative motion. The two fluids are governed by the (special) relativistic equations for a perfect magnetized gas in the infinite conductivity approximation. Methods. By adopting the vortex-sheet approximation, the relativistic magnetohydrodynamics equations are linearized around the ...