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Here we prove the all-time propagation of the Sobolev regularity for the velocity field solution of the two-dimensional compressible Navier-Stokes equations, provided the volume (bulk) viscosity coefficient is large enough. The initial…

偏微分方程分析 · 数学 2021-03-03 Raphaël Danchin , Piotr Boguslaw Mucha

In this paper, we are concerned with the global wellposedness of 2-D density-dependent incompressible Navier-Stokes equations with variable viscosity, in a critical functional frame- work which is invariant by the scaling of the equations…

偏微分方程分析 · 数学 2012-12-18 Jingchi Huang , Marius Paicu , Ping Zhang

We consider the incompressible Navier-Stokes equations in the cylinder $\R \times \T$, with no exterior forcing, and we investigate the long-time behavior of solutions arising from merely bounded initial data. Although we do not know if…

偏微分方程分析 · 数学 2013-08-08 Thierry Gallay , Sinisa Slijepcevic

We establish the inviscid limit of the incompressible Navier-Stokes equations on the whole plane $\mathbb{R}^2$ for initial data having vorticity as a superposition of point vortices and a regular component. In particular, this rigorously…

偏微分方程分析 · 数学 2019-02-22 Toan T. Nguyen , Trinh T. Nguyen

In this paper we study the vanishing viscosity limit for the inhomogeneous incompressible Navier-Stokes equations on bounded domains with no-slip boundary condition in two or three space dimensions. We show that, under suitable assumptions…

偏微分方程分析 · 数学 2025-07-03 Jens Schröder , Emil Wiedemann

We investigate a $2d$-conservative lattice gas exhibiting a dynamical active-absorbing phase transition with critical density $\rho_c$. We derive the hydrodynamic equation for this model, showing that all critical exponents governing the…

统计力学 · 物理学 2025-01-07 Clément Erignoux , Alexandre Roget , Assaf Shapira , Marielle Simon

The long time behavior of a couple of interacting asymmetric exclusion processes of opposite velocities is investigated in one space dimension. We do not allow two particles at the same site, and a collision effect (exchange) takes place…

概率论 · 数学 2009-11-10 Jozsef Fritz , Balint Toth

Based on Sirovich's two-fluid kinetic theory and a dodecagonal discrete velocity model, a two-dimensional 61-velocity finite-difference lattice Boltzmann method for the complete Navier-Stokes equations of binary fluids is formulated.…

统计力学 · 物理学 2009-11-10 Aiguo Xu

The divergence of the heat conductivity in the thermodynamic limit is investigated in 2d-lattice models of anharmonic solids with nearest-neighbour interaction from single-well potentials. Two different numerical approaches based on…

chao-dyn · 物理学 2007-05-23 A. Lippi , R. Livi

In the present paper we study slow-fast systems of coupled equations from fluid dynamics, where the fast component is perturbed by additive noise. We prove that, under a suitable limit of infinite separation of scales, the slow component of…

概率论 · 数学 2025-07-28 Arnaud Debussche , Umberto Pappalettera

We use the vorticity formulation to study the long-time behavior of solutions to the Navier-Stokes equation on R^3. We assume that the initial vorticity is small and decays algebraically at infinity. After introducing self-similar…

偏微分方程分析 · 数学 2016-09-07 Th. Gallay , C. E. Wayne

We study a finite-element based space-time discretisation for the 2D stochastic Navier-Stokes equations in a bounded domain supplemented with no-slip boundary conditions. We prove optimal convergence rates in the energy norm with respect to…

数值分析 · 数学 2022-10-06 Dominic Breit , Andreas Prohl

This article establishes estimates on the dimension of the global attractor of the two-dimensional rotating Navier-Stokes equation for viscous, incompressible fluids on the $\beta$-plane. Previous results in this setting by M.A.H.…

偏微分方程分析 · 数学 2025-03-07 Aseel Farhat , Anuj Kumar , Vincent R. Martinez

We prove convergence of a finite difference approximation of the compressible Navier--Stokes system towards the strong solution in $R^d,$ $d=2,3,$ for the adiabatic coefficient $\gamma>1$. Employing the relative energy functional, we find a…

数值分析 · 数学 2020-02-19 Hana Mizerova , Bangwei She

Here we prove the existence of global in time regular solutions to the two-dimensional compressible Navier-Stokes equations supplemented with arbitrary large initial velocity $v\_0$ and almost constantdensity $\varrho\_0$, for large volume…

偏微分方程分析 · 数学 2016-03-24 Raphaël Danchin , Piotr B. Mucha

A perfectly elastic beam is situated on top of a two dimensional fluid canister. The beam is deforming in accordance to an interaction with a Navier-Stokes fluid. Hence a hyperbolic equation is coupled to the Navier-Stokes equation. The…

偏微分方程分析 · 数学 2024-02-19 Sebastian Schwarzacher , Pei Su

The purpose of this note is to present a spatially localized $L \log L$ bound on the vorticity in the 3D Navier-Stokes equations, assuming a very mild, \emph{purely geometric} condition. This yields an extra-log decay of the distribution…

偏微分方程分析 · 数学 2014-02-10 Z. Bradshaw , Z. Grujić

We consider the global existence and large-time asymptotic behavior of strong solutions to the Cauchy problem of the three-dimensional nonhomogeneous incompressible Navier-Stokes equations with density-dependent viscosity and vacuum. We…

偏微分方程分析 · 数学 2021-01-12 Cheng He , Jing Li , Boqiang Lü

We consider the 2D incompressible Navier-Stokes equations with Dirichlet boundary condition in the exterior of one obstacle. Assuming that the circulation at infinity of the velocity is sufficiently small, we prove that the large time…

偏微分方程分析 · 数学 2011-07-12 Dragoş Iftimie , Grzegorz Karch , Christophe Lacave

We study a fully discrete finite element approximation of a model for unsteady flows of rate-type viscoelastic fluids with stress diffusion in two and three dimensions. The model consists of the incompressible Navier--Stokes equation for…

数值分析 · 数学 2024-06-21 Dennis Trautwein