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A stochastic free-boundary problem for the three-dimensional barotropic compressible Navier--Stokes equations is studied. The main feature of the model is that the free boundary is transported by a Stratonovich stochastic flow, so that the…

偏微分方程分析 · 数学 2026-05-11 Gianmarco Del Sarto , Matthias Hieber , Tarek Zöchling

This paper considers and extends spectral and scattering theory to dissipative symmetric systems that may have zero speeds and in particular to strictly dissipative boundary conditions for Maxwell's equations. Consider symmetric systems…

泛函分析 · 数学 2014-09-03 Ferruccio Colombini , Vesselin Petkov , Jeffrey Rauch

The inviscid multi-layer quasi-geostrophic equations are considered over an arbitrary bounded domain. The no-flux but non-homogeneous boundary conditions are imposed to accommodate the free fluctuations of the top and layer interfaces.…

偏微分方程分析 · 数学 2019-03-29 Qingshan Chen

In this paper we study the initial-boundary-value problem for the barotropic compressible magnetohydrodynamic system with slip boundary conditions in three-dimensional exterior domain. We establish the global existence and uniqueness of…

偏微分方程分析 · 数学 2021-12-16 Yazhou Chen , Bin Huang , Xiaoding Shi

This brief note addresses the free boundary problem arising from the steady two-dimensional seepage flow through a rectangular dam. The flow problem consists in finding the free boundary location, and the velocity and pressure fields. The…

流体动力学 · 物理学 2015-07-21 Carmine Di Nucci

Bernoulli's free boundary problem is an overdetermined problem in which one seeks an annular domain such that the capacitary potential satisfies an extra boundary condition. There exist two different types of solutions called elliptic and…

偏微分方程分析 · 数学 2021-03-12 Antoine Henrot , Michiaki Onodera

In this paper, we study the Navier-Stokes equations of compressible, barotropic flow posed in a bounded set in $\mathbb{R}^3$ with different boundary conditions. Specifically, we prove that the local-in-time smooth solution of the…

偏微分方程分析 · 数学 2020-11-24 Anthony Suen

In this work we study linear Maxwell equations with time- and space-dependent matrix-valued permittivity and permeability on domains with a perfectly conducting boundary. This leads to an initial boundary value problem for a first order…

偏微分方程分析 · 数学 2018-05-30 Martin Spitz

We establish the existence of positive solutions to a general class of overdetermined semilinear elliptic boundary problems on suitable bounded open sets $\Omega\subset\mathbb{R}^n$. Specifically, for $n\leq 4$ and under mild technical…

偏微分方程分析 · 数学 2025-07-09 Alberto Enciso , Pablo Hidalgo-Palencia , Xavier Ros-Oton

We study free boundary problems for incompressible inhomogeneous flows governed by the Navier--Stokes equations, focusing on the regularity and global-in-time well-posedness of solutions in critical functional frameworks for small initial…

偏微分方程分析 · 数学 2025-12-11 Piotr B. Mucha , Tomasz Piasecki , Yoshihiro Shibata

We study the free boundary problem for the equations of compressible Euler equations with a vacuum boundary condition. Our main goal is to recover in Eulerian coordinates the earlier well-posedness result obtained by Lindblad [Lindblad H.,…

偏微分方程分析 · 数学 2009-02-04 Yuri Trakhinin

We investigate linear boundary value problems for first-order one-dimensional hyperbolic systems in a strip. We establish conditions for existence and uniqueness of bounded continuous solutions. For that we suppose that the non-diagonal…

偏微分方程分析 · 数学 2025-12-10 R. Klyuchnyk , I. Kmit

Free boundary problems are those described by PDEs that exhibit a priori unknown (free) interfaces or boundaries. These problems appear in Physics, Probability, Biology, Finance, or Industry, and the study of solutions and free boundaries…

偏微分方程分析 · 数学 2017-07-05 Xavier Ros-Oton

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 survey recent progress in a program aimed at proving general Fatou-type results and establishing the well-posedness of a variety of boundary value problems in the upper half-space ${\mathbb{R}}^n_{+}$ for second-order, homogeneous,…

偏微分方程分析 · 数学 2020-08-13 José María Martell , Dorina Mitrea , Irina Mitrea , Marius Mitrea

We deal with the barotropic compressible magnetohydrodynamic equations in three-dimensional (3D) bounded domain with slip boundary condition and vacuum. By a series of a priori estimates, especially the boundary estimates, we prove the…

偏微分方程分析 · 数学 2021-03-12 Yazhou Chen , Bin Huang , Xiaoding Shi

We prove a priori estimates for the three-dimensional compressible Euler equations with moving {\it physical} vacuum boundary, with an equation of state given by $p(\rho) = C_\gamma \rho^\gamma $ for $\gamma >1$. The vacuum condition…

偏微分方程分析 · 数学 2015-05-13 Daniel Coutand , Hans Lindblad , Steve Shkoller

We are concerned with the global existence of classical solutions to the barotropic compressible Navier-Stokes equations with slip boundary condition in a three-dimensional (3D) exterior domain. We demonstrate that the classical solutions…

偏微分方程分析 · 数学 2021-12-13 Guocai Cai , Jing Li , Boqiang Lü

We consider the initial-boundary value problem in the quarter space for the system of equations of ideal Magneto-Hydrodynamics for compressible fluids with perfectly conducting wall boundary conditions. On the two parts of the boundary the…

偏微分方程分析 · 数学 2024-11-20 Paolo Secchi

We study a rather general class of optimal "ballistic" transport problems for matrix-valued measures. These problems naturally arise, in the spirit of \emph{Y. Brenier. Comm. Math. Phys. (2018) 364(2) 579-605}, from a certain dual…

泛函分析 · 数学 2021-11-30 Dmitry Vorotnikov