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相关论文: The Rayleigh-Taylor instability with local energy …

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In this article we consider the inhomogeneous incompressible Euler equations describing two fluids with different constant densities under the influence of gravity as a differential inclusion. By considering the relaxation of the…

偏微分方程分析 · 数学 2021-06-15 Björn Gebhard , József J. Kolumbán , László Székelyhidi

We consider the evolution of two incompressible fluids with homogeneous densities $\rho_-<\rho_+$ subject to gravity described by the inviscid Boussinesq equations and provide the explicit relaxation of the associated differential…

偏微分方程分析 · 数学 2022-01-24 Björn Gebhard , József J. Kolumbán

We study the Rayleigh-Taylor instability for two miscible, incompressible, inviscid fluids. Scale-invariant estimates for the size of the mixing zone and coarsening of internal structures in the fully nonlinear regime are established…

偏微分方程分析 · 数学 2024-12-20 Konstantin Kalinin , Govind Menon , Bian Wu

Three very different algorithms have been proposed for solution of the Rayleigh-Taylor turbulent mixing problem. They are based upon three different physical principles governing the Euler equations for fluid flow, which serve to complete…

流体动力学 · 物理学 2019-01-23 James Glimm , Baolian Cheng , David H. Sharp , Tulin Kaman

In this paper, we investigate the Rayleigh-Taylor instability problem for two compressible, immiscible, inviscid flows rotating with an constant angular velocity, and evolving with a free interface in the presence of a uniform gravitational…

综合数学 · 数学 2012-05-01 Ran Duan , Fei Jiang , Song Jiang

We show that H\"{o}lder continuous incompressible Euler flows that satisfy the local energy inequality ("globally dissipative" solutions) exhibit nonuniqueness and contain examples that strictly dissipate kinetic energy. The collection of…

偏微分方程分析 · 数学 2022-02-08 Philip Isett

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 consider the Rayleigh-Taylor problem for two compressible, immiscible, inviscid, barotropic fluids evolving with a free interface in the presence of a uniform gravitational field. After constructing Rayleigh-Taylor steady-state solutions…

偏微分方程分析 · 数学 2011-02-24 Yan Guo , Ian Tice

We examine the two-dimensional Euler equations including the local energy (in)equality as a differential inclusion and show that the associated relaxation essentially reduces to the known relaxation for the Euler equations considered…

偏微分方程分析 · 数学 2022-09-02 Björn Gebhard , József J. Kolumbán

We introduce the concept of energy-variational solutions for hyperbolic conservation laws. Intrinsically, these energy-variational solutions fulfill the weak-strong uniqueness principle and the semi-flow property, and the set of solutions…

偏微分方程分析 · 数学 2022-11-23 Thomas Eiter , Robert Lasarzik

Isothermal compressible two-phase flows in a capillary are modeled with and without phase transition in the presence of gravity, employing Darcy's law for the velocity field. It is shown that the resulting systems are thermodynamically…

偏微分方程分析 · 数学 2018-07-09 Jan Pruess , Gieri Simonett , Mathias Wilke

We study the equations obtained from linearizing the compressible Navier-Stokes equations around a steady-state profile with a heavier fluid lying above a lighter fluid along a planar interface, i.e. a Rayleigh-Taylor instability. We…

偏微分方程分析 · 数学 2009-11-25 Yan Guo , Ian Tice

We study the existence of unstable classical solutions of the Rayleigh--Taylor instability problem (abbr. RT problem) of an inhomogeneous incompressible viscous fluid in a bounded domain. We find that, by using an existence theory of…

数学物理 · 物理学 2019-01-17 Fei Jiang , Youyi Zhao

We investigate the nonlinear instability of a smooth steady density profile solution of the threedimensional nonhomogeneous incompressible Navier-Stokes equations in the presence of a uniform gravitational field, including a Rayleigh-Taylor…

偏微分方程分析 · 数学 2015-06-05 Fei Jiang , Song Jiang , Guoxi Ni

This paper investigates the well-posedness and Rayleigh-Taylor (R-T) instability for a system of two-dimensional nonhomogeneous incompressible fluid, subject to the non-slip and Naiver-slip boundary conditions at the outer and inner…

偏微分方程分析 · 数学 2025-02-11 Liang Li , Quan Wang

We investigate the nonlinear instability of a smooth Rayleigh-Taylor steady-state solution (including the case of heavier density with increasing height) to the three-dimensional incompressible nonhomogeneous magnetohydrodynamic (MHD)…

偏微分方程分析 · 数学 2014-12-02 Fei Jiang , Song Jiang , Weiwei Wang

In [F. Jiang, S. Jiang, On instability and stability of three-dimensional gravity driven viscous flows in a bounded domain, Adv. Math., 264 (2014) 831--863], Jiang et.al. investigated the instability of Rayleigh--Taylor steady-state of a…

偏微分方程分析 · 数学 2015-01-05 Fei Jiang

Smooth solutions of the forced incompressible Euler equations satisfy an energy balance, where the rate-of-change in time of the kinetic energy equals the work done by the force per unit time. Interesting phenomena such as turbulence are…

偏微分方程分析 · 数学 2024-04-22 Fabian Jin , Samuel Lanthaler , Milton C. Lopes Filho , Helena J. Nussenzveig Lopes

We show that for any $\al<\frac 17$ there exist $\al$-H\"older continuous weak solutions of the three-dimensional incompressible Euler equation, which satisfy the local energy inequality and strictly dissipate the total kinetic energy. The…

偏微分方程分析 · 数学 2023-02-15 Camillo De Lellis , Hyunju Kwon

In this paper we examine the linear stability of equilibrium solutions to incompressible Euler's equation in 2- and 3-dimensions. The space of perturbations is split into two classes - those that preserve the topology of vortex lines and…

偏微分方程分析 · 数学 2015-05-27 Elizabeth Thoren
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