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By means of a unifying measure-theoretic approach, we establish lower bounds on the Hausdorff dimension of the space-time set which can support anomalous dissipation for weak solutions of fluid equations, both in the presence or absence of…

偏微分方程分析 · 数学 2024-07-29 Luigi De Rosa , Theodore D. Drivas , Marco Inversi

In this paper we study the convergence of a power-law model for dilatant compressible fluids to a class of models exhibiting a maximum admissible shear rate, called thick compressible fluids. These kinds of problems were studied previously…

偏微分方程分析 · 数学 2025-07-22 Didier Bresch , Cosmin Burtea , Maja Szlenk

We prove regularity for a class of boundary value problems for first order elliptic systems, with boundary conditions determined by spectral decompositions, under coefficient differentiability conditions weaker than previously known. We…

微分几何 · 数学 2007-05-23 P. T. Chrusciel , R. Bartnik

In this article we initiate the mathematical study of the dynamics of a system of nonlinear Partial Differential Equations modelling the motion of incompressible, isothermal and conducting modified bipolar fluids in presence of magnetic…

偏微分方程分析 · 数学 2012-06-25 Paul Andre Razafimandimby

In this article, we consider the Ericksen-Leslie's hyperbolic system for compressible liquid crystal model in three spatial dimensions. Global regularity for small and smooth initial data near equilibrium is proved for the case that the…

偏微分方程分析 · 数学 2023-06-13 Jiaxi Huang , Ning Jiang , Yi-Long Luo , Lifeng Zhao

We prove the existence of a compact random attractor for the stochastic Benjamin-Bona-Mahony Equation defined on an unbounded domain. This random attractor is invariant and attracts every pulled-back tempered random set under the forward…

偏微分方程分析 · 数学 2008-05-14 Bixiang Wang

We study the long time behavior of solutions of the non-autonomous Reaction-Diffusion equation defined on the entire space R^n when external terms are unbounded in a phase space. The existence of a pullback global attractor for the equation…

偏微分方程分析 · 数学 2009-03-31 Bixiang Wang

We consider generalized Forchheimer flows of either isentropic gases or slightly compressible fluids in porous media. By using Muskat's and Ward's general form of the Forchheimer equations, we describe the fluid dynamics by a doubly…

偏微分方程分析 · 数学 2015-04-06 Emine Celik , Luan Hoang , Thinh Kieu

This paper concerns the tempered pullback dynamics of 2D incompressible non-autonomous Navier-Stokes equation with non-homogeneous boundary condition on Lipschitz-like domain. With the presence of a time-dependent external force f(t) which…

偏微分方程分析 · 数学 2018-04-24 Xin-Guang Yang , Yuming Qin , To Fu Ma , Yongjin Lu

Long-time and large-data existence of weak solutions for initial- and boundary-value problems concerning three-dimensional flows of \emph{incompressible} fluids is nowadays available not only for Navier--Stokes fluids but also for various…

偏微分方程分析 · 数学 2023-08-16 Miroslav Bulíček , Josef Málek , Erika Maringová

A compressible laminar boundary layer developing over an isotropic porous substrate is investigated by asymptotic and numerical methods. The substrate is modeled as an array of cubes. The momentum and enthalpy balance equations are derived…

流体动力学 · 物理学 2025-08-15 Ludovico Fossà , Pierre Ricco

New results are obtained for global regularity and long-time behavior of the solutions to the 2D Boussinesq equations for the flow of an incompressible fluid with positive viscosity and zero diffusivity in a smooth bounded domain. Our first…

偏微分方程分析 · 数学 2016-08-24 Ning Ju

We construct pullback attractors to the weak solutions of the three-dimensional Dirichlet problem for the incompressible Navier-Stokes equations in the case when the external force may become unbounded as time goes to plus or minus…

动力系统 · 数学 2012-01-13 Dmitry Vorotnikov

In the present paper, we study the existence, uniqueness and behaviour in time of the solutions to the Darcy-B\'enard problem for an extended-quasi-thermal-incompressible fluid-saturated porous medium uniformly heated from below. Unlike the…

偏微分方程分析 · 数学 2023-10-26 Giuseppe Arnone , Florinda Capone

We study the dynamical behavior of compressible fluids evolving on the outer domain of communication of a Schwarzschild background. To this end, we design several numerical methods which take the Schwarzschild geometry into account and we…

偏微分方程分析 · 数学 2016-12-30 Philippe G. LeFloch , Shuyang Xiang

We study the global existence of weak solutions to a multi-dimensional simplified Ericksen-Leslie system for compressible flows of nematic liquid crystals with large initial energy in a bounded domain $\Omega\subset \mathbb{R}^N$, where N=2…

偏微分方程分析 · 数学 2014-03-21 Fei Jiang , Song Jiang , Dehua Wang

Linear waves in bounded inviscid fluids do not generally form normal modes with regular eigenfunctions. Examples are provided by inertial waves in a rotating fluid contained in a spherical annulus, and internal gravity waves in a stratified…

天体物理学 · 物理学 2016-08-30 Gordon I. Ogilvie

We consider a class of kinetic models for polymeric fluids motivated by the Peterlin dumbbell theories for dilute polymer solutions with a nonlinear spring law for an infinitely extensible spring. The polymer molecules are suspended in an…

We consider the physically relevant fully compressible setting of the Rayleigh Benard problem of a fluid confined between two parallel plates, heated from the bottom, and subjected to the gravitational force. Under suitable restrictions…

偏微分方程分析 · 数学 2021-10-22 Eduard Feireisl , Agnieszka Swierczewska-Gwiazda

This study delves into a comprehensive examination of the three-dimensional $(3D)$ incompressible magneto-hydrodynamic $(MHD)$ equations in $H^{1}(\R^{3})$. The modification involves incorporating a power term in the nonlinear convection…

偏微分方程分析 · 数学 2025-01-28 Maroua Ltifi