A viscous magnetohydrodynamic Kelvin–Helmholtz instability in the interface of two fluid layer: Part II. An application to the atmosphere of the Sun
Sign Up to like & getrecommendations! Published in 2019 at "Astrophysics and Space Science"
DOI: 10.1007/s10509-019-3609-x
Abstract: The main aim of this submission is to investigate the effects of some parameters like wave number, shear velocity, magnetic field and temperature for the growth rate of the magnetized Kelvin-Helmholtz instability (KHI) with incessant… read more here.
Keywords: helmholtz instability; fluid layer; interface two; kelvin helmholtz ... See more keywords
Kelvin–Helmholtz billows above Richardson number $1/4$
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2019.725
Abstract: We study the dynamical system of a two-dimensional, forced, stratified mixing layer at finite Reynolds number $Re$ , and Prandtl number $Pr=1$ . We consider a hyperbolic tangent background velocity profile in the two cases… read more here.
Keywords: helmholtz billows; system; kelvin helmholtz; number ... See more keywords
Interplay between Kelvin–Helmholtz and lower-hybrid drift instabilities
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Plasma Physics"
DOI: 10.1017/s0022377819000758
Abstract: Boundary layers in space and astrophysical plasmas are the location of complex dynamics where different mechanisms coexist and compete, eventually leading to plasma mixing. In this work, we present fully kinetic particle-in-cell simulations of different… read more here.
Keywords: lower hybrid; hybrid drift; kelvin helmholtz; gradient ... See more keywords
Satellite Data‐Based 3‐D Simulation of Kelvin‐Helmholtz Instability and Induced Magnetic Reconnection at the Earth's Magnetopause
Sign Up to like & getrecommendations! Published in 2019 at "Geophysical Research Letters"
DOI: 10.1029/2019gl083282
Abstract: We present a 3‐D two‐fluid simulation using plasma parameters as measured by MMS on 8 September 2015 concerning the nonlinear development of the Kelvin‐Helmholtz instability at the Earth's magnetopause. We observe an extremely rich nonlinear… read more here.
Keywords: kelvin helmholtz; helmholtz instability; magnetic reconnection; reconnection ... See more keywords
Identifying Active Kelvin–Helmholtz Vortices on Saturn's Magnetopause Boundary
Sign Up to like & getrecommendations! Published in 2020 at "Geophysical Research Letters"
DOI: 10.1029/2019gl084206
Abstract: For ∼2,000 Cassini magnetopause encounters, we analyse plasma and magnetic fields. The boundary can be unstable to the Kelvin–Helmholtz instability (KHI), which can drive large‐scale flows identifiable in plasma measurements. Bulk flow reversed from the… read more here.
Keywords: active kelvin; identifying active; helmholtz vortices; kelvin helmholtz ... See more keywords
Effects of Fluctuating Magnetic Field on the Growth of the Kelvin‐Helmholtz Instability at the Earth's Magnetopause
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Geophysical Research"
DOI: 10.1029/2019ja027515
Abstract: At the Earth’s magnetopause, the Kelvin-Helmholtz (KH) instability, driven by the persistent velocity shear between the magnetosheath and the magnetosphere, has been frequently observed durin... read more here.
Keywords: helmholtz instability; earth magnetopause; kelvin helmholtz;
Gravity Waves Emitted From Kelvin‐Helmholtz Instabilities
Sign Up to like & getrecommendations! Published in 2023 at "Geophysical Research Letters"
DOI: 10.1029/2022gl102674
Abstract: Fritts, Wang, Lund, and Thorpe (2022, https://doi.org/10.1017/jfm.2021.1085) and Fritts, Wang, Thorpe, and Lund (2022, https://doi.org/10.1017/jfm.2021.1086) described a 3‐dimensional direct numerical simulation of interacting Kelvin‐Helmholtz instability (KHI) billows and resulting tube and knot (T&K) dynamics that… read more here.
Keywords: waves emitted; kelvin; kelvin helmholtz; gravity waves ... See more keywords
Physical effects of magnetic fields on the Kelvin-Helmholtz instability in a free shear layer
Sign Up to like & getrecommendations! Published in 2018 at "Physics of Fluids"
DOI: 10.1063/1.5004473
Abstract: The Kelvin-Helmholtz instability of a parallel shear flow with a hyperbolic-tangent velocity profile has been simulated numerically at a high Reynolds number. The fluid is perfectly conducting with low viscosity, and the strength of the… read more here.
Keywords: kelvin helmholtz; helmholtz instability; field; effect ... See more keywords
Construction and validation of a statistical model for the nonlinear Kelvin-Helmholtz instability under compressible, multimode conditions
Sign Up to like & getrecommendations! Published in 2018 at "Physics of Plasmas"
DOI: 10.1063/1.5060958
Abstract: A new model for the evolution of compressible, multimode Kelvin-Helmholtz (KH) instability is presented. The model is built upon compressible single vortex evolution and two-vortex interaction, resulting in a statistical description of the compressible KH… read more here.
Keywords: evolution; kelvin helmholtz; compressible multimode; physics ... See more keywords
Kelvin-Helmholtz instability in a shallow-water flow with a finite width
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Mathematical Physics"
DOI: 10.1063/1.5126321
Abstract: We examine an effect of side walls on the linear stability of an interface of tangential-velocity discontinuity in shallow-water flow. The flow is pure horizontal in the plane xy, and the fluid is ... read more here.
Keywords: kelvin helmholtz; helmholtz instability; flow; water flow ... See more keywords
Flow curvature effects on the Kelvin–Helmholtz instability: hybrid simulation
Sign Up to like & getrecommendations! Published in 2017 at "Radiation Effects and Defects in Solids"
DOI: 10.1080/10420150.2017.1398254
Abstract: The Kelvin–Helmholtz instability (KHI) is a classical fluid instability occurring on the surface between two fluids with sheared velocities. KHI is also present in a plasma embedded in a magnetic field. In plasmas that fill… read more here.
Keywords: kelvin helmholtz; velocity; flow curvature; simulation ... See more keywords