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Kelvin-Helmholtz instability

Kelvin–Helmholtz instability and Alfvénic vortex shedding in solar eruptions

Kelvin–Helmholtz instability and Alfvénic vortex shedding in solar eruptions

... the KelvinHelmholtz instability ( KHI ) develops at various but speci fi c locations at the boundary layer between the erupting fi eld and the background atmosphere, depending on the relative angle ...

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The effects of resistivity and viscosity on the Kelvin Helmholtz instability in oscillating coronal loops

The effects of resistivity and viscosity on the Kelvin Helmholtz instability in oscillating coronal loops

... the Kelvin-Helmholtz instability ...the instability can still be excited. This instability causes the deformation of the loop’s density profile and generates an energy cas- cade to ...

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Effect of Magnetic Field on Kelvin Helmholtz Instability in a Couple Stress Fluid Layer Bounded Above by a Porous Layer and Below by a Rigid Surface

Effect of Magnetic Field on Kelvin Helmholtz Instability in a Couple Stress Fluid Layer Bounded Above by a Porous Layer and Below by a Rigid Surface

... the Kelvin-Helmholtz (KH) instability of parallel flows in labora- tory, geophysical, or astrophysical systems, recognized many years ago, has generated a huge ...the Kelvin-Helmholtz ...

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Kelvin Helmholtz Instability in a Fluid Layer Bounded Above by a Porous Layer and Below by a Rigid Surface in Presence of Magnetic Field

Kelvin Helmholtz Instability in a Fluid Layer Bounded Above by a Porous Layer and Below by a Rigid Surface in Presence of Magnetic Field

... The Kelvin-Helmholtz instability (KHI) occurs when two fluids are in relative motion on either side of a common ...K-H instability of free charges, separating two semi-infinite dielectric ...

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Parallel Flow Velocity Shear Kelvin Helmholtz Instability with AC Electric Field

Parallel Flow Velocity Shear Kelvin Helmholtz Instability with AC Electric Field

... the instability in the ion cyclotron regime ...electrostatic Kelvin Helmholtz instability,showing reduction of growth when the ion gyroradius becomes comparable to the shear layer ...the ...

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Energetics of the Kelvin Helmholtz instability induced by transverse waves in twisted coronal loops

Energetics of the Kelvin Helmholtz instability induced by transverse waves in twisted coronal loops

... The azimuthal waves are contained within the bound- ary region of the loop and are associated with a significant radial velocity shear. In dissipative media, these waves will deposit their energy as heat through the ...

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Gradient Effect on Kelvin Helmholtz Instability in the Presence of Inhomogeneous D.C. Electric Field

Gradient Effect on Kelvin Helmholtz Instability in the Presence of Inhomogeneous D.C. Electric Field

... mechanism for instability of this mode is due to coupling of regions of positive and negative wave energy. This coupling occurs if velocity shear is non-uniform and the shear is the source of energy. Figure 2 ...

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Magnetoacoustic waves and the Kelvin-Helmholtz instability in a steady asymmetric slab

Magnetoacoustic waves and the Kelvin-Helmholtz instability in a steady asymmetric slab

... Abstract Recent observations have shown that bulk flow motions in structured solar plas- mas, most evidently in coronal mass ejections (CMEs), may lead to the formation of KelvinHelmholtz instabilities ...

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Stratified Kelvin–Helmholtz turbulence of compressible shear flows

Stratified Kelvin–Helmholtz turbulence of compressible shear flows

... Abstract. We study scaling laws of stratified shear flows by performing high-resolution numerical simulations of invis- cid compressible turbulence induced by KelvinHelmholtz instability. An ...

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Magnetic depression and electron transport in an ion scale flux rope associated with Kelvin–Helmholtz waves

Magnetic depression and electron transport in an ion scale flux rope associated with Kelvin–Helmholtz waves

... Wilder, F. D., Ergun, R. E., Schwartz, S. J., Newman, D. L., Eriksson, S., Stawarz, J. E., Goldman, M. V., Goodrich, K. A., Gershman, D. J., Malaspina, D. M., Holmes, J. C., Sturner, A. P., Burch, J. L., Torbert, R. B., ...

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Study of Surface Instability of Kelvin Helmholtz Type in a Fluid Layer Bounded above by a Porous Layer and below by a Rigid Surface

Study of Surface Instability of Kelvin Helmholtz Type in a Fluid Layer Bounded above by a Porous Layer and below by a Rigid Surface

... namic Kelvin-Helmholtz instability of the interface be- tween two uniform superposed Rivlin-Ericksen viscoe- lastic dielectric fluid-particle mixtures in porous medium is investigated by El-Sayed ...

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Data mining for vortices on the Earth's magnetosphere – algorithm application for detection and analysis

Data mining for vortices on the Earth's magnetosphere – algorithm application for detection and analysis

... the KelvinHelmholtz waves were driven by the super-Alfvénic shear created by the accelerated reconnected ...the KelvinHelmholtz vortices at the ...the KelvinHelmholtz ...

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Scaling laws in Hall inertial range turbulence

Scaling laws in Hall inertial range turbulence

... the KelvinHelmholtz instability is excited and decays into smaller-scale KelvinHelmholtz vortices until a spec- trum of low-frequency small-scale turbulence is ...

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Coupling between reconnection and Kelvin-Helmholtz instabilities in collisionless plasmas

Coupling between reconnection and Kelvin-Helmholtz instabilities in collisionless plasmas

... the Kelvin-Helmholtz ...The Kelvin-Helmholtz instability involves only the vorticity field, which ends up in a turbulent regime, while the current density maintains a laminar ...

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Direct numerical simulation of the flow around an aerofoil in ramp-up motion

Direct numerical simulation of the flow around an aerofoil in ramp-up motion

... a Kelvin-Helmholtz instability generated at the leading ...KH instability associated with the leading edge generated shear layer and continuously produces fine grain vorticity that ...

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On Kelvin–Helmholtz and parametric instabilities driven by coronal waves

On Kelvin–Helmholtz and parametric instabilities driven by coronal waves

... The KelvinHelmholtz instability has been proposed as a mechanism to extract energy from magnetohydrodynamic (MHD) kink waves in flux tubes, and to drive dissipation of this wave energy through ...

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Internal waves in marginally stable abyssal stratified flows

Internal waves in marginally stable abyssal stratified flows

... the KelvinHelmholtz instability induced by the velocity shear at the interface; hence, the marginal stability of internal waves could explain the formation mechanism of very long billow trains ...

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Introduction to liquid wall film atomization

Introduction to liquid wall film atomization

... As in the case of experiments, in the area of physical principles and predictions of entrainment from liquid surface, work of Woodmansee [21] is also significant. The author, in accordance with the principle of the roll ...

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Transverse wave induced Kelvin Helmholtz rolls in spicules

Transverse wave induced Kelvin Helmholtz rolls in spicules

... Transverse MHD waves can easily trigger the Kelvin-Helmholtz Instability (KHI) (Terradas et al. 2008; Antolin et al. 2014; Magyar & Van Doorsselaere 2016), with vortices excited mostly in the ...

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Modelling the three dimensional tidal flow structure in semi enclosed basins

Modelling the three dimensional tidal flow structure in semi enclosed basins

... length, Kelvin dissipation factor and the first Poincaré decay length) of a depth-averaged model to those found for the 3D model values for friction parameters were found for ranges of viscosity and slip parameter ...

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