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The fundamental "two-fluid" model for describing plasma dynamics is given by the Euler-Maxwell system, in which compressible ion and electron fluids interact with their own self-consistent electromagnetic field. We prove global stability of…

偏微分方程分析 · 数学 2013-03-06 Yan Guo , Alexandru D. Ionescu , Benoit Pausader

Here we investigate global strong solutions for a class of partially dissipative hyperbolic systems in the framework of critical homogeneous Besov spaces. Our primary goal is to extend the analysis of our previous paper [10] to a functional…

偏微分方程分析 · 数学 2022-01-19 Timothée Crin-Barat , Raphaël Danchin

A fundamental two-fluid model for describing dynamics of a plasma is the Euler-Poisson system, in which compressible ion and electron fluids interact with their self-consistent electrostatic force. Global smooth electron dynamics were…

数学物理 · 物理学 2015-05-18 Yan Guo , Benoit Pausader

The Lagrangian fluid description is employed to solve the initial value problem for one-dimensional, compressible fluid flows represented by the Euler-Poisson system. Exact nonlinear and time-dependent solutions are obtained, which exhibit…

等离子体物理 · 物理学 2017-09-06 A. R. Karimov , H. Schamel

The Euler-Poisson(EP) system describes the dynamic behavior of many important physical flows. In this work, a Riccati system that governs the flow's gradient is studied. The evolution of divergence is governed by the Riccati type equation…

偏微分方程分析 · 数学 2020-07-17 Yongki Lee

We investigate the global existence and optimal time decay rate of solution to the one-dimensional (1D) two-phase flow described by compressible Euler equations coupled with compressible Navier-Stokes equations through the relaxation drag…

偏微分方程分析 · 数学 2024-11-28 Xushan Huang , Yi Wang

This paper studies the diffusion approximation, non-equilibrium model of radiation hydrodynamics derived by Buet and Despr\'es (J. Quant. Spectrosc. Radiat. Transf. 85 (2004), no. 3-4, 385-418). The latter describes a non-relativistic…

偏微分方程分析 · 数学 2025-10-30 Corrado Lattanzio , Ramón G. Plaza , José Manuel Valdovinos

The two-dimensional ideal (Euler) fluids can be described by the classical fields of streamfunction, velocity and vorticity and, in an equivalent manner, by a model of discrete point-like vortices interacting in plane by a self-generated…

流体动力学 · 物理学 2010-01-05 Florin Spineanu , Madalina Vlad

In this paper, we present a refined framework for the global-in-time well-posedness theory for the pressureless Euler--Navier--Stokes system and the optimal temporal decay rates of certain norms of solutions. Here the coupling of two…

偏微分方程分析 · 数学 2023-07-10 Young-Pil Choi , Jinwook Jung , Junha Kim

As a continued work of [18], we are concerned with the Timoshenko system in the case of non-equal wave speeds, which admits the dissipative structure of \textit{regularity-loss}. Firstly, with the modification of a priori estimates in [18],…

偏微分方程分析 · 数学 2015-03-29 Jiang Xu , Naofumi Mori , Shuichi Kawashima

The problem of parameterizing the interactions of larger scales and smaller scales in fluid flows is addressed by considering a property of two-dimensional incompressible turbulence. The property we consider is selective decay, in which a…

混沌动力学 · 物理学 2018-10-31 F. Gay-Balmaz , D. D. Holm

We consider the Goldstein-Taylor model, which is a 2-velocity BGK model, and construct the "optimal" Lyapunov functional to quantify the convergence to the unique normalized steady state. The Lyapunov functional is optimal in the sense that…

偏微分方程分析 · 数学 2023-08-21 Franz Achleitner , Anton Arnold , Beatrice Signorello

In this paper we discuss the dissipative property of near-equilibrium classical solutions to the Cauchy problem of the Vlasov-Maxwell-Boltzmann System in the whole space $\R^3$ when the positive charged ion flow provides a spatially uniform…

偏微分方程分析 · 数学 2011-07-12 Renjun Duan

This paper extends the mathematical theory of axisymmetrization and vorticity depletion within the two-dimensional (2D) Euler equations, with an emphasis on the dynamics of radially symmetric, monotonic vorticity profiles. By analyzing…

流体动力学 · 物理学 2024-11-14 Rômulo Damasclin Chaves dos Santos

The second-grade fluid equations are a model for viscoelastic fluids, with two parameters: $\alpha > 0$, corresponding to the elastic response, and $\nu > 0$, corresponding to viscosity. Formally setting these parameters to $0$ reduces the…

偏微分方程分析 · 数学 2015-06-11 Milton C. Lopes Filho , Helena J. Nussenzveig Lopes , Edriss S. Titi , Aibin Zang

We formally derive the hydrodynamic limit of a system modelling a bosons gas having a condensed part, made of a quantum kinetic and a Gross-Pitaevskii equation. The limit model, which is a two-fluids Euler system, is approximated by an…

数学物理 · 物理学 2009-05-07 Thibaut Allemand

The partially dissipative systems that characterize many physical phenomena were first pointed out by Godunov (1961), then investigated by Friedrichs-Lax (1971) who introduced the convex entropy, and later by Shizuta-Kawashima (1984,1985)…

偏微分方程分析 · 数学 2026-03-03 Ling-Yun Shou , Jiang Xu , Ping Zhang

We devise an iterative scheme for numerically calculating dynamical two-point correlation functions in integrable many-body systems, in the Eulerian scaling limit. Expressions for these were originally derived in Ref. [1] by combining the…

统计力学 · 物理学 2021-01-01 Frederik S. Møller , Gabriele Perfetto , Benjamin Doyon , Jörg Schmiedmayer

We are concerned with the study of the Cauchy problem to the 3D compressible Hall-magnetohydrodynamic system. We first establish the unique global solvability of strong solutions to the system when the initial data are close to a stable…

偏微分方程分析 · 数学 2018-06-08 Fuyi Xu , Meiling Chi , Lishan Liu , Yonghong Wu

We present a modification of a recently developed volume of fluid method for multiphase problems, so that it can be used in conjunction with a fractional step-method and fast Poisson solver, and validate it with standard benchmark problems.…

流体动力学 · 物理学 2018-07-06 Marco Edoardo Rosti , Francesco De Vita , Luca Brandt