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Building on the recent work of C. De Lellis and L. Sz\'{e}kelyhidi, we construct global weak solutions to the three-dimensional incompressible Euler equations which are zero outside of a finite time interval and have velocity in the…

偏微分方程分析 · 数学 2014-02-17 Philip Isett

Under consideration is the damped semilinear wave equation \[ u_{tt}+u_t-\Delta u+u+f(u)=0 \] in a bounded domain $\Omega$ in $\mathbb{R}^3$ subject to an acoustic boundary condition with a singular perturbation, which we term "massless…

偏微分方程分析 · 数学 2018-08-14 Joseph L. Shomberg

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

In view of the possibility that the 3D Navier-Stokes equations (NSE) might not always have regular solutions, we introduce an abstract framework for studying the asymptotic behavior of multi-valued dissipative evolutionary systems with…

偏微分方程分析 · 数学 2007-05-23 Alexey Cheskidov , Ciprian Foias

This article extends the previous paper in "M.W. Yuen, \textit{Stabilities for Euler-Poisson Equations in Some Special Dimensions}, J. Math. Anal. Appl. \textbf{344} (2008), no. 1, 145--156.", from the Euler-Poisson equations for attractive…

偏微分方程分析 · 数学 2010-01-05 Manwai Yuen

The paper investigates the existence of global attractors and their upper semicontinuity for a structural damped wave equation on $\mathbb{R}^{N}: u_{tt}-\Delta u+(-\Delta)^\alpha u_{t}+u_{t}+u+g(u)=f(x)$, where $\alpha\in (1/2, 1)$ is…

偏微分方程分析 · 数学 2019-05-17 Qionglei Chen , Pengyan Ding , Zhijian Yang

The paper is devoted to a modification of the classical Cahn-Hilliard equation proposed by some physicists. This modification is obtained by adding the second time derivative of the order parameter multiplied by an inertial coefficient…

偏微分方程分析 · 数学 2015-05-14 Maurizio Grasselli , Giulio Schimperna , Sergey Zelik

We consider a nonlinear reaction-diffusion equation settled on the whole euclidean space. We prove the well-posedness of the corresponding Cauchy problem in a general functional setting, namely, when the initial datum is uniformly locally…

偏微分方程分析 · 数学 2009-10-20 Maurizio Grasselli , Dalibor Pražák , Giulio Schimperna

We present results on the non-linear dynamics of inhomogeneous cosmological models with irrotational dust and a positive cosmological constant, considering, in particular, a wide class with vanishing magnetic Weyl tensor. For those patches…

天体物理学 · 物理学 2009-10-22 M. Bruni , S. Matarrese , O. Pantano

The existing paradox between theory and computational experiment for weak solutions of systems of conservation laws in higher space dimensions is arguably resolved. Apparently successful computations are identified with underlying…

偏微分方程分析 · 数学 2024-08-28 Michael Sever

This manuscript concerns the dynamics of non-isentropic compressible Euler equations in a physical vacuum. We establish the Hadamard-style local well-posedness in low-regularity weighted Sobolev spaces, where the gas-vacuum interface is…

偏微分方程分析 · 数学 2025-08-04 Sicheng Liu , Tao Luo

In this paper, we consider the Cauchy problem for the three-dimensional barotropic compressible Navier-Stokes equations with density-dependent viscosities. By considering the system as an elliptic-dominated structure and defining suitable…

偏微分方程分析 · 数学 2024-08-09 Xiangdi Huang , Jiaxu Li , Rong Zhang

The question of (non-)uniqueness of one-dimensional self-similar solutions to the Riemann problem for hyperbolic systems of gas dynamics in sets of multi-dimensional admissible weak solutions was addressed in recent years in several papers…

偏微分方程分析 · 数学 2020-12-02 Christian Klingenberg , Ondřej Kreml , Václav Mácha , Simon Markfelder

We construct a family of steady solutions to the two-dimensional incompressible Euler equation in a general bounded domain, such that the vorticity is supported in two well-separated regions of small diameter and converges to a pair of…

偏微分方程分析 · 数学 2023-01-19 Guodong Wang , Bijun Zuo

We consider incompressible Navier-Stokes equations in a bounded 2D domain, complete with the so-called dynamic slip boundary conditions. Assuming that the data are regular, we show that weak solutions are strong. As an application, we…

偏微分方程分析 · 数学 2024-02-27 Dalibor Pražák , Michael Zelina

We prove the conservation of energy for weak and statistical solutions of the two-dimensional Euler equations, generated as strong (in an appropriate topology) limits of the underlying Navier-Stokes equations and a Monte Carlo-Spectral…

偏微分方程分析 · 数学 2021-02-25 S. Lanthaler , S. Mishra , C. Parés-Pulido

In this paper dynamic von Karman equations with localized interior damping supported in a boundary collar are considered. Hadamard well-posedness for von Karman plates with various types of nonlinear damping are well-known, and the…

偏微分方程分析 · 数学 2012-01-31 Pelin G. Geredeli , Irena Lasiecka , Justin T. Webster

Absorbing ball in $H^{1}(\mho)$ is obtained for the strong solution to the three dimensional viscous moist primitive equations under the natural assumption $Q_{1},Q_{2}\in L^{2}(\mho)$ which is weaker than the assumption $Q_{1},Q_{2}\in…

偏微分方程分析 · 数学 2016-09-15 Guoli Zhou , Yanfeng Guo

Onsager conjectured that weak solutions of the Euler equations for incompressible fluids in 3D conserve energy only if they have a certain minimal smoothness, (of order of 1/3 fractional derivatives) and that they dissipate energy if they…

偏微分方程分析 · 数学 2007-05-23 A. Cheskidov , P. Constantin , S. Friedlander , R. Shvydkoy

A weak formulation for the so-called "semilinear strongly damped wave equation with constraint" is introduced and a corresponding notion of solution is defined. The main idea in this approach consists in the use of duality techniques in…

偏微分方程分析 · 数学 2015-03-09 Elena Bonetti , Elisabetta Rocca , Riccardo Scala , Giulio Schimperna