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Related papers: A Well-Posed Kelvin-Helmholtz Instability Test and…

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Observations show various jets in the solar atmosphere with significant rotational motions, which may undergo instabilities leading to heat ambient plasma. We study the Kelvin-Helmholtz (KH) instability of twisted and rotating jets caused…

Solar and Stellar Astrophysics · Physics 2015-11-11 T. V. Zaqarashvili , I. Zhelyazkov , L. Ofman

In this paper, when the magnitude of the Mach number is strictly between some fixed small enough constant and $\sqrt{2}$, we can prove the linear and nonlinear ill-posedness of the Kelvin-Helmholtz problem for compressible ideal fluids. To…

Analysis of PDEs · Mathematics 2024-07-03 Binqiang Xie , Bin Zhao

Flow-induced instabilities are relevant for the storage and dynamics of magnetic fields in stellar convection zones and possibly also in other astrophysical contexts. We continue the study started in the first paper of this series by…

Astrophysics · Physics 2009-11-13 V. Holzwarth , D. Schmitt , M. Schuessler

We adapt a modern scheme of smoothed particle hydrodynamics (SPH) to our tree N-body/SPH galactic chemodynamics code GCD+. The applied scheme includes imple- mentations of the artificial viscosity switch and artificial thermal conductivity…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 Daisuke Kawata , Takashi Okamoto , Brad K. Gibson , David J. Barnes , Renyue Cen

The evolution of the Kelvin-Helmholtz Instability (KHI) is widely used to assess the performance of numerical methods. We employ this instability to test both the smoothed particle hydrodynamics (SPH) and the meshless finite mass (MFM)…

Cosmology and Nongalactic Astrophysics · Physics 2022-11-23 Tirso Marin-Gilabert , Milena Valentini , Ulrich P. Steinwandel , Klaus Dolag

The Kelvin-Helmholtz Instability (KHI) has been observed in the solar atmosphere. Ion-neutral collisions may play a relevant role for the growth rate and evolution of the KHI in solar partially ionized plasmas as in, e.g., solar…

Solar and Stellar Astrophysics · Physics 2015-06-04 R. Soler , A. J. Diaz , J. L. Ballester , M. Goossens

Kelvin-Helmholtz instability (KHI) is a basic physical process in fluids and magnetized plasmas, with applications successfully modelling e.g. exponentially growing instabilities observed at magnetospheric and heliospheric boundaries, in…

Solar and Stellar Astrophysics · Physics 2018-07-10 Xiaohong Li , Jun Zhang , Shuhong Yang , Yijun Hou , Robert Erdelyi

The stability of the heliopause, the tangential discontinuity separating the solar wind from the interstellar medium, is influenced by various processes, including the Kelvin-Helmholtz instability. This study investigates the role of charge…

Solar and Stellar Astrophysics · Physics 2025-06-18 A. V. Titova , S. D. Korolkov , V. V. Izmodenov

We analyse the analog of the Kelvin-Helmholtz instability on free suface of a superfluid liquid. This instability is induced by the relative motion of superfluid and normal components of the same liquid along the surface. The instability…

Condensed Matter · Physics 2007-05-23 S. E. Korshunov

The Kelvin-Helmholtz (KH) instability occurring in a single shear flow configuration that is embedded in a uniform flow-aligned magnetic field, is revisited by means of high resolution two-dimensional (2D) magnetohydrodynamic (MHD)…

Astrophysics · Physics 2009-11-10 H. Baty , R. Keppens , P. Comte

A recent laboratory experiment (Blaauwgeers et al. 2003) suggests that a Kelvin-Helmholtz (KH) instability at the interface between two superfluids, one rotating and anisotropic, the other stationary and isotropic, may trigger sudden…

Astrophysics · Physics 2009-09-29 A. Mastrano , A. Melatos

Context: In the context of the solar coronal heating problem, one possible explanation for the high coronal temperature is the release of energy by magnetohydrodynamic (MHD) waves. The energy transfer is believed to be possible, among…

Solar and Stellar Astrophysics · Physics 2021-06-23 Michaël Geeraerts , Tom Van Doorsselaere

Transverse oscillations of coronal loops are often observed and have been theoretically interpreted as kink magnetohydrodynamic (MHD) modes. Numerical simulations by Terradas et al. (2008, ApJ 687, L115) suggest that shear flows generated…

Solar and Stellar Astrophysics · Physics 2014-11-20 R. Soler , J. Terradas , R. Oliver , J. L. Ballester , M. Goossens

The Kelvin-Helmholtz instability (KHI) is a nonlinear shear-driven instability that develops at the interface between shear flows in plasmas. KHI has been inferred in various astrophysical plasmas and has been observed in situ at the…

Transport coefficients in highly ionised plasmas like the intra-cluster medium (ICM) are still ill-constrained. They influence various processes, among them the mixing at shear flow interfaces due to the Kelvin-Helmholtz instability (KHI).…

Cosmology and Nongalactic Astrophysics · Physics 2018-01-17 E. Roediger , R. P. Kraft , P. Nulsen , E. Churazov , W. Forman , M. Brueggen , R. Kokotanekova

We report experimental results for the Kelvin-Helmholtz instability between two immiscible fluids in parallel flow in a Hele-Shaw cell. We focus our interest on the influence of the gap size between the walls on the instability…

Fluid Dynamics · Physics 2016-09-08 Laurent Meignin , Patricia Ern , Philippe Gondret , Marc Rabaud

Instabilities in rotating detonation are concerned because of their potential influence on the stability of operation. Previous studies on instability of 2-D rotating detonation mainly cared about the one of the contact discontinuity…

Fluid Dynamics · Physics 2017-03-17 Qin Li , Pengxin Liu , Hanxin Zhang

The Kelvin-Helmholtz (KH) instability is studied in a non-Newtonian dusty plasma with an experimentally verified model [Phys. Rev. Lett. {\bf 98}, 145003 (2007)] of shear flow rate dependent viscosity. The shear flow profile used here is a…

Plasma Physics · Physics 2015-06-17 D. Banerjee , S. Garai , M. S. Janaki , N. Chakrabarti

The Kelvin-Helmholtz instability (KHI) can occur when there is a relative motion between two adjacent fluids. In the case of magnetized plasma, the shear velocity must exceed the local Alfv\'{e}n speed for the instability to develop. The…

Solar and Stellar Astrophysics · Physics 2026-04-21 Leon Ofman , Olga Khabarova , Ryun-Yong Kwon , Yogesh , Eyal Heifetz , Katariina Nykyri

In the present paper, we study the evolutionary conditions for Kelvin--Helmholtz (KH) instability in a high-temperature solar surge observed in NOAA AR11271 using the Solar Dynamics Observatory data on 2011 August 25. We study the…

Solar and Stellar Astrophysics · Physics 2015-06-23 I. Zhelyazkov , R. Chandra , A. K. Srivastava , T. Mishonov