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In this paper we consider the spatial semi-discretization of conservative PDEs. Such finite dimensional approximations of infinite dimensional dynamical systems can be described as flows in suitable matrix spaces, which in turn leads to the…

数值分析 · 数学 2022-03-01 Michele Benzi , Milo Viviani

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 construct global-in-time classical solutions to the nonlinear Vlasov-Maxwell system in a three-dimensional half-space beyond the vacuum scattering regime. Our approach combines the construction of stationary solutions to the associated…

偏微分方程分析 · 数学 2025-10-07 Jin Woo Jang , Chanwoo Kim

This paper concerns a diffuse interface model for the flow of two incompressible viscoelastic fluids in a bounded domain. More specifically, the fluids are assumed to be macroscopically immiscible, but with a small transition region, where…

偏微分方程分析 · 数学 2024-11-15 Yadong Liu , Dennis Trautwein

We classify convex ancient curve shortening flows with free boundary on general bounded convex domains.

微分几何 · 数学 2024-04-16 Theodora Bourni , Nathan Burns , Spencer Catron

Building on the work of Crouseilles and Faou on the 2D case, we construct $C^\infty$ quasi-periodic solutions to the incompressible Euler equations with periodic boundary conditions in dimension 3 and in any even dimension. These solutions…

偏微分方程分析 · 数学 2022-09-21 Alberto Enciso , Daniel Peralta-Salas , Francisco Torres de Lizaur

We consider the stationary flow of an inviscid and incompressible fluid of constant density in the region $D=(0, L)\times \mathbb{R}^2$. We are concerned with flows that are periodic in the second and third variables and that have…

偏微分方程分析 · 数学 2018-12-27 Boris Buffoni , Erik Wahlén

A new form of quasiclassical space-time dynamics for constrained systems reveals how quantum effects can be derived systematically from canonical quantization of gravitational systems. These quasiclassical methods lead to additional fields,…

广义相对论与量子宇宙学 · 物理学 2024-01-04 Kallan Berglund , Martin Bojowald , Manuel Diaz , Gianni Sims

This paper is concerned with the global existence and uniqueness of classical solutions to the barotropic compressible Navier-Stokes equations with degenerate viscosity coefficients in three-dimensional bounded domains or in the whole space…

偏微分方程分析 · 数学 2026-05-01 Qinghao Lei

We study a diffuse interface model for the flow of two viscous incompressible Newtonian fluids in a bounded domain. The fluids are assumed to be macroscopically immiscible, but a partial mixing in a small interfacial region is assumed in…

偏微分方程分析 · 数学 2011-04-01 Helmut Abels

Many physical systems of interest involve the close interaction of a flow in a domain with complex, time-varying boundaries. Treatment of boundaries of this nature is cumbersome due to the difficulty in explicitly tracking boundaries that…

流体动力学 · 物理学 2025-02-25 Emma M. Boyd , Eric Sandall , Maycon Meier , J. Matt Quinlan , Brandon Runnels

We study a thermodynamically consistent diffuse-interface model that describes the motion of two macroscopically immiscible, incompressible, and viscous Newtonian fluids with unmatched densities. This model is compatible with continuum…

偏微分方程分析 · 数学 2026-04-30 Mingwen Fei , Xiang Fei , Yadong Liu , Hao Wu

In this paper, we show the existence of the first non trivial family of classical global solutions of the inviscid surface quasi-geostrophic equation.

偏微分方程分析 · 数学 2021-04-29 Angel Castro , Diego Córdoba , Javier Gómez-Serrano

Attempts to disentangle shear-flow turbulence often focus on identifying relatively simple solutions, such as travelling waves or periodic orbits. We show, however, that capturing multiscale features requires considering states at least as…

流体动力学 · 物理学 2026-01-27 Runjie Song , Kengo Deguchi , Genta Kawahara , Yongyun Hwang

A semi-explicit formula of solution to the boundary layer system for thermal layer derived from the compressible Navier-Stokes equations with the non-slip boundary condition when the viscosity coefficients vanish is given, in particular in…

偏微分方程分析 · 数学 2016-08-10 Cheng-Jie Liu , Ya-Guang Wang , Tong Yang

We prove existence of weak solutions for a diffuse interface model for the flow of two viscous incompressible Newtonian fluids with different densities in a bounded domain in two and three space dimensions. In contrast to previous works, we…

偏微分方程分析 · 数学 2019-11-21 Helmut Abels , Yutaka Terasawa

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

In this paper we describe a method to derive classical solutions of the Navier-Stokes equations for non-stationary initial value problems in domain R^n (n = 2, 3 or higher). A new closed-form analytic solution of the incompressible…

数学物理 · 物理学 2015-09-28 R. K. Michael Thambynayagam

The \emph{two-dimensional} (2D) existence result of global(-in-time) solutions for the motion equations of incompressible, inviscid, non-resistive magnetohydrodynamic (MHD) fluids with velocity damping had been established in [Wu--Wu--Xu,…

偏微分方程分析 · 数学 2021-05-14 Fei Jiang , Song Jiang , Youyi Zhao

This monograph addresses an important problem in mathematical fluid dynamics: constructing stable, long-term solutions to certain quasilinear evolution equations. We implement an elaborate scheme for building global quasiperiodic solutions…

偏微分方程分析 · 数学 2025-06-27 Javier Gómez-Serrano , Alexandru D. Ionescu , Jaemin Park