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We report a novel measurement of the late time self-similar growth constant $\alpha_B$ of the Rayleigh-Taylor instability (RTI) from controlled initial perturbations. To this end, we have developed a laser-driven experiment, fielded on the…

流体动力学 · 物理学 2022-10-14 A. Shimony , C. M. Huntington , K. A. Flippo , Y. Elbaz , S. A. MacLaren , D. Shvarts , G. Malamud

The two-dimensional Richtmyer-Meshkov Instability(RMI) system and the coexisting system combined with Rayleigh-Taylor Instability(RTI) are simulated with a multiple-relaxation time discrete Boltzmann model. It is found that, for the RMI…

软凝聚态物质 · 物理学 2018-11-14 Feng Chen , Aiguo Xu , Guangcai Zhang

In this research, the height, curvature and velocity of the bubble tip in Rayleigh-Taylor instability at arbitrary Atwood number with horizontal magnetic field are investigated. To support the earlier simulation and experimental results,…

等离子体物理 · 物理学 2016-08-09 Rahul Banerjee

The Rayleigh--Taylor instability of two immiscible fluids in the limit of small Atwood numbers is studied by means of a phase-field description. In this method the sharp fluid interface is replaced by a thin, yet finite, transition layer…

流体动力学 · 物理学 2009-11-13 Antonio Celani , Andrea Mazzino , Paolo Muratore-Ginanneschi , Lara Vozella

This work focuses on Rayleigh-Taylor instability (RTI)driven by acceleration with power-law time-dependence. We review the existing theoretical approaches, apply the group theory approach to solve this long-standing problem, and yield the…

流体动力学 · 物理学 2020-08-26 Snezhana Abarzhi , Kurt Williams

We consider the effect of toroidal magnetic fields on hydrodynamically stable Taylor-Couette differential rotation flows. For current-free magnetic fields a nonaxisymmetric m=1 magnetorotational instability arises when the magnetic Reynolds…

天体物理学 · 物理学 2008-11-26 G. Ruediger , R. Hollerbach , M. Schultz , D. Elstner

The Rayleigh-Taylor (RT) instability affects a vast range of High Energy Density (HED) length scales, spanning from supernova explosions (10$^{13}$ m) to inertial confinement fusion (10$^{-6}$ m). In inertial confinement fusion, the RT…

A novel phase field method is proposed to model the continuous transition of binary fluids exhibiting temperature sensitive miscibility gap, from immiscible state to miscible state via partially miscible states. The model is employed to…

流体动力学 · 物理学 2025-08-28 Anubhav Dubey , Constantin Habes , Holger Marschall , Sakir Amiroudine

We use the machinery usually employed for studying the onset of Rayleigh--B\'enard convection in hydro- and magnetohydro-dynamic settings to address the onset of convection induced by the magnetothermal instability and the…

流体动力学 · 物理学 2016-06-01 Himanshu Gupta , Shailendra K. Rathor , Martin E. Pessah , Sagar Chakraborty

The interaction of differential rotation and toroidal fields that are current-free in the gap between two corotating axially unbounded cylinders is considered. It is shown that nonaxisymmetric perturbations are unstable if the rotation rate…

太阳与恒星天体物理 · 物理学 2015-06-15 G. Ruediger , M. Gellert , M. Schultz , R. Hollerbach , F. Stefani

We numerically calculate the growth and saturation of the Rayleigh-Taylor instability caused by the deceleration of relativistic outflows with Lorentz factor {\Gamma} = 10, 30, and 100. The instability generates turbulence whose scale…

高能天体物理现象 · 物理学 2015-06-15 Paul C. Duffell , Andrew I. MacFadyen

MRT unstable plumes are observed in a loop-like eruptive prominence using SDO/AIA observations. The small-scale cavities are developed within the prominence, where perturbations trigger dark plumes (P1 \& P2) propagating with the speed of…

太阳与恒星天体物理 · 物理学 2019-03-27 Sudheer K. Mishra , A. K. Srivastava

Early studies on Rayleigh-Taylor instability (RTI) primarily relied on the Navier-Stokes (NS) model. As research progresses, it becomes increasingly evident that the kinetic information that the NS model failed to capture is of great value…

流体动力学 · 物理学 2024-07-04 Jie Chen , Aiguo Xu , Yudong Zhang , Dawei Chen , Zhihua Chen

We consider the long-standing problem of Rayleigh-Taylor instability with variable acceleration, and focus on the early-time dynamics of an interface separating incompressible ideal fluids of different densities subject to an acceleration…

等离子体物理 · 物理学 2019-06-25 Des L. Hill , Aklant K. Bhowmick , Snezhana I. Abarzhi

We derive scaling relations based on free-fall and isotropy assumptions for the kinematic small-scale dynamo growth rate and amplification factor over the course of the mixing, saturation, and decay phases of the Rayleigh-Taylor instability…

流体动力学 · 物理学 2021-11-04 Valentin Skoutnev , Elias R. Most , Amitava Bhattacharjee , Alexander A. Philippov

We examine the role of ionizing radiation emitted from black holes (BHs) in suppressing the growth of the Rayleigh-Taylor instability (RTI) across the ionization front (I-front) that forms when the gas fueling the BH is neutral. We use…

宇宙学与河外天体物理 · 物理学 2015-06-17 KwangHo Park , Massimo Ricotti , Tiziana Di Matteo , Christopher S. Reynolds

We present results of 3D simulations of MHD instabilities at the accretion disk-magnetosphere boundary. The instability is Rayleigh-Taylor, and develops for a fairly broad range of accretion rates and stellar rotation rates and magnetic…

天体物理学 · 物理学 2008-03-09 Akshay K. Kulkarni , Marina M. Romanova

In dilute astrophysical plasmas, thermal conduction is primarily along magnetic field lines, and therefore highly anisotropic. As a result, the usual convective stability criterion is modified from a condition on entropy to a condition on…

天体物理学 · 物理学 2008-11-26 Ian J. Parrish , James M. Stone

The distribution functions of field fluctuations of the turbulent mixing layer produced by a Rayleigh-Taylor instability (RTI) have long been hypothesized to involve bimodal effects. The present work reviews existing quantitative and…

流体动力学 · 物理学 2024-11-26 R. Watteaux , J. A. Redford , A. Llor

The linear stability of global non-axisymmetric modes in differentially rotating, magnetized, non-ideal plasma is crucial for understanding turbulence and transport phenomena. We investigate the competition between the local…

高能天体物理现象 · 物理学 2025-11-18 Alexander Haywood , Fatima Ebrahimi