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In the current state of the art regarding the Navier--Stokes equations, the existence of unique solutions for incompressible flows in two spatial dimensions is already well-established. Recently, these results have been extended to models…

偏微分方程分析 · 数学 2024-11-11 Jean-Paul Adogbo , Piotr B. Mucha , Maja Szlenk

Exact solutions of both the Navier-Stokes and Euler equations are found on the surface of a sphere. Under the assumption of a vanishing convection term, the flow of two oppositely rotating point vortices at the poles turns out to be the…

经典分析与常微分方程 · 数学 2025-05-07 Sun-Chul Kim , Habin Yim

A few basic, intuitive, properties of the Navier-Stokes system of equations for incompressible fluid flows are discussed in this paper. We present a rephrased interpretation of the Navier-Stokes equation in a space having an arbitrary…

综合数学 · 数学 2023-06-28 R. K. Michael Thambynayagam

We investigate compressible nematic liquid crystal flows in three-dimensional (3D) bounded domains with slip boundary condition for velocity and Neumann boundary condition for orientation field. By applying piecewise-estimate method and…

偏微分方程分析 · 数学 2023-10-09 Yang Liu , Xin Zhong

We present a new kinetic model and its lattice Boltzmann realization for the simulation of compressible, non-ideal fluid flows. The method employs first-neighbour lattices and introduces a consistent set of correction terms constructed via…

流体动力学 · 物理学 2026-05-08 S. A. Hosseini , M. Feinberg , I. V. Karlin

Considering the isentropic Euler equations of compressible fluid dynamics with geometric effects included, we establish the existence of entropy solutions for a large class of initial data. We cover fluid flows in a nozzle or in spherical…

偏微分方程分析 · 数学 2008-12-16 Philippe G. LeFloch , Michael Westdickenberg

We are concerned with the global existence and vanishing dispersion limit of strong/classical solutions to the Cauchy problem of the one-dimensional barotropic compressible quantum Navier-Stokes equations, which consists of the compressible…

偏微分方程分析 · 数学 2023-12-08 Zhengzheng Chen , Huijiang Zhao

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, we study the quantitative regularity and blowup criteria for classical solutions to the three-dimensional incompressible Navier-Stokes equations in a critical Besov space framework. Specifically, we consider solutions $u\in…

偏微分方程分析 · 数学 2025-02-26 Ruilin Hu , Phuoc-Tai Nguyen , Quoc-Hung Nguyen , Ping Zhang

A global solution of the Einstein equations is given, consisting of a perfect fluid interior and a vacuum exterior. The rigidly rotating and incompressible perfect fluid is matched along the hypersurface of vanishing pressure with the…

广义相对论与量子宇宙学 · 物理学 2007-05-23 László Á. Gergely , Zoltán Perjés , Gyula Fodor

We study scenarios of self-similar type blow-up for the incompressible Navier-Stokes and the Euler equations. The previous notions of the discretely (backward) self-similar solution and the asymptotically self-similar solution are…

偏微分方程分析 · 数学 2015-05-13 Dongho Chae

We consider the classical compressible Euler's Equations in three space dimensions with an arbitrary equation of state, and whose initial data corresponds to a constant state outside a sphere. Under suitable restriction on the size of the…

偏微分方程分析 · 数学 2013-05-07 Demetrios Christodoulou , Shuang Miao

Compressible Euler-Poisson equations are the standard self-gravitating models for stellar dynamics in classical astrophysics. In this article, we construct periodic solutions to the isothermal ($\gamma=1$) Euler-Poisson equations in $R^{2}$…

数学物理 · 物理学 2014-08-05 Man Kam Kwong , Manwai Yuen

We study an initial-boundary value problem of three-dimensional (3D) compressible isentropic magneto-micropolar fluid equations with Coulomb force and slip boundary conditions in a bounded simply connected domain, whose boundary has a…

偏微分方程分析 · 数学 2024-08-22 Yang Liu , Xin Zhong

Fluid configurations in three-dimensions, displaying a plausible decay of regularity in a finite time, are suitably built and examined. Vortex rings are the primary ingredients in this study. The full Navier-Stokes system is converted into…

偏微分方程分析 · 数学 2020-05-12 Daniele Funaro

In the first part of the paper we provide a new classification of incompressible fluids characterized by a continuous monotone relation between the velocity gradient and the Cauchy stress. The considered class includes Euler fluids,…

偏微分方程分析 · 数学 2020-05-28 Jan Blechta , Josef Málek , K. R. Rajagopal

We prove by an explicit construction that solutions to incompressible 3D Euler equations defined in the periodic cube can be mapped bijectively to a new system of equations whose solutions are globally regular. We establish that the usual…

流体动力学 · 物理学 2011-07-08 Miguel D. Bustamante

In fluid mechanics, a lot of authors have been reporting analytical solutions of Euler and Navier-Stokes equations. But there is an essential deficiency of non-stationary solutions indeed. In our presentation, we explore the case of…

流体动力学 · 物理学 2021-05-21 Sergey V. Ershkov , Roman V. Shamin

We derive a new formulation of the $3D$ compressible Euler equations with dynamic entropy exhibiting remarkable null structures and regularity properties. Our results hold for an arbitrary equation of state (which yields the pressure in…

偏微分方程分析 · 数学 2017-01-25 Jared Speck

It is well known that the full compressible Navier-Stokes equations can be deduced via the Chapman-Enskog expansion from the Boltzmann equation as the first-order correction to the Euler equations with viscosity and heat-conductivity…

偏微分方程分析 · 数学 2020-08-21 Renjun Duan , Shuangqian Liu