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We construct global dissipative solutions on the torus of dimension at most three of the defocusing isothermal Euler-Langevin-Korteweg system, which corresponds to the Euler-Korteweg system of compressible quantum fluids with an isothermal…

偏微分方程分析 · 数学 2020-10-15 Quentin Chauleur

We consider a coupled system consisting of the Navier-Stokes equations and a porous medium type of Keller-Segel system that model the motion of swimming bacteria living in fluid and consuming oxygen. We establish the global-in-time…

偏微分方程分析 · 数学 2016-05-04 Yun-Sung Chung , Kyungkeun Kang

We consider the evolution of two-dimensional incompressible flows with variable density, only bounded and bounded away from zero. Assuming that the initial velocity belongs to a suitable critical subspace of L^2 , we prove a global-in-time…

偏微分方程分析 · 数学 2024-04-04 Raphaël Danchin

In this paper, we prove the first existence result of weak solutions to the 3D Euler equation with initial vorticity concentrated in a circle and velocity field in $C([0,T],L^{2^-})$. The energy becomes finite and decreasing for positive…

偏微分方程分析 · 数学 2024-04-08 Francisco Gancedo , Antonio Hidalgo-Torné , Francisco Mengual

This paper is concerned with a compressible MHD equations describing the evolution of viscous non-resistive fluids in piecewise regular bounded Lipschitz domains. Under the general inflow-outflow boundary conditions, we prove existence of…

偏微分方程分析 · 数学 2025-01-28 Yang Li , Young-Sam Kwon , Yongzhong Sun

At large scales of space and time, the nonequilibrium dynamics of local observables in extensive many-body systems is well described by hydrodynamics. At the Euler scale, one assumes that each mesoscopic region independently reaches a state…

统计力学 · 物理学 2023-07-26 Benjamin Doyon , Gabriele Perfetto , Tomohiro Sasamoto , Takato Yoshimura

This work is a companion to [EJE1] and its purpose is threefold: first, we will establish local well-posedness for the axi-symmetric $3D$ Euler equation in the domains $\{(x_1,x_2,x_3) \in \mathbb{R}^3 : x_3^2 \le \mathfrak{c}(x_1^2 +…

偏微分方程分析 · 数学 2017-12-27 Tarek M. Elgindi , In-Jee Jeong

We consider the Dirichlet problem for a compressible two-fluid model in three dimensions, and obtain the global existence of weak solution with large initial data and independent adiabatic constants \Gamma,\gamma>=9/5. The pressure…

偏微分方程分析 · 数学 2021-07-27 Huanyao Wen

We aim at the stability of time-dependent motions, such as time-periodic ones, of a rigid body in a viscous fluid filling the exterior to it in 3D. The fluid motion obeys the incompressible Navier-Stokes system, whereas the motion of the…

偏微分方程分析 · 数学 2024-02-21 Toshiaki Hishida

The global solutions with large initial data for the isothermal compressible fluid models of Korteweg type has been studied by many authors in recent years. However, little is known of global large solutions to the nonisothermal…

偏微分方程分析 · 数学 2015-11-10 Zhengzheng Chen , Lin He , Huijiang Zhao

We prove that the time of classical existence of smooth solutions to the relativistic Euler equations can be bounded from below in terms of norms that measure the "(sound) wave-part" of the data in Sobolev space and "transport-part" in…

偏微分方程分析 · 数学 2024-12-17 Sifan Yu

In this article we examine the interaction of incompressible 2D flows with compact material boundaries. Our focus is the dynamic behavior of the circulation of velocity around boundary components and the possible exchange between flow…

偏微分方程分析 · 数学 2013-05-07 Dragos Iftimie , Milton Lopes Filho , Helena Nussenzveig Lopes , Franck Sueur

In this article we study the principle of energy conservation for the Euler-Korteweg system. We formulate an Onsager-type sufficient regularity condition for weak solutions of the Euler-Korteweg system to conserve the total energy. The…

偏微分方程分析 · 数学 2018-01-03 Tomasz Dębiec , Piotr Gwiazda , Agnieszka Świerczewska-Gwiazda , Athanasios Tzavaras

Due to the dissipative structure of \textit{regularity-loss}, extra higher regularity than that for the global-in-time existence is usually imposed to obtain the optimal decay rates of classical solutions to dissipative systems. The aim of…

偏微分方程分析 · 数学 2014-10-21 Jiang Xu , Naofumi Mori , Shuichi Kawashima

We consider three-dimensional inviscid irrotational flow in a two layer fluid under the effects of gravity and surface tension, where the upper fluid is bounded above by a rigid lid and the lower fluid is bounded below by a flat bottom. We…

偏微分方程分析 · 数学 2019-07-24 Dag Nilsson

We study the Euler-Korteweg equations with a weak capillarity tensor. It formally converges to the Euler equations in the zero capillarity limit. Our aim is two-fold : first we prove rigorously this limit in R d , d $\ge$ 1, and obtain a…

偏微分方程分析 · 数学 2025-02-17 Corentin Audiard , Marc-Antoine Vassenet

We study the global-in-time dynamics of vortex rings for the three-dimensional incompressible Euler equations, under the assumption of axisymmetric flows without swirl. For a broad class of initial data sharing only the macroscopic…

偏微分方程分析 · 数学 2026-02-24 Dengjun Guo , In-Jee Jeong , Lifeng Zhao

In this work, we study the global existence of strong solutions and large-time behavior of a two-phase fluid model in a bounded domain. The model consists of the isothermal Euler equations and the isentropic compressible Navier--Stokes…

偏微分方程分析 · 数学 2021-01-01 Jinwook Jung

Due to extreme difficulties in numerical simulations of Euler-Maxwell equations, which are caused by the highly complicated structures of the equations, this paper concerns the simplification of Euler-Maxwell system through the…

偏微分方程分析 · 数学 2023-12-13 Rui Jin , Yachun Li , Liang Zhao

We consider an incompressible fluid with axial symmetry without swirl, assuming initial data such that the initial vorticity is very concentrated inside $N$ small disjoint rings of thickness $\varepsilon$, each one of vorticity mass and…

偏微分方程分析 · 数学 2025-03-21 Paolo Buttà , Guido Cavallaro , Carlo Marchioro