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Additive noise in Partial Differential equations, in particular those of fluid mechanics, has relatively natural motivations. The aim of this work is showing that suitable multiscale arguments lead rigorously, from a model of fluid with…

概率论 · 数学 2022-05-12 Franco Flandoli , Umberto Pappalettera

In this paper, we investigate the similarity solutions for a steady laminar incompressible boundary layer equations governing the Magnetohydrodynamic (MHD) flow near the forward stagnation point of two-dimensional and axisymmetric bodies.…

经典物理 · 物理学 2007-05-23 Jean-David Hoernel

This paper is devoted to the diffusive limit of the nonlinear radiative heat transfer system with curved boundary domain (\textit{two dimensional disk}). The solution constructed in \cite{ghattassi2022convergence} by the leading order…

偏微分方程分析 · 数学 2023-05-30 Mohamed Ghattassi , Xiaokai Huo , Nader Masmoudi

The theory of turbulent Newtonian fluids turns out that the choice of the boundary condition is a relevant issue, since it can modify the behavior of the fluid by creating or avoiding a strong boundary layer. In this work we study…

偏微分方程分析 · 数学 2017-05-03 Nikolai Chemetov , Fernanda Cipriano

We consider the flow of an { ideal} fluid in a 2D-bounded domain, admitting flows through the boundary of this domain. The flow is described by Euler equations with \textit{non-homogeneous } Navier slip boundary conditions. These conditions…

偏微分方程分析 · 数学 2024-09-25 N. V. Chemetov , S. N. Antontsev

We provide an asymptotic analysis of linear transport problems in the diffusion limit under minimal regularity assumptions on the domain, the coefficients, and the data. The weak form of the limit equation is derived and the convergence of…

偏微分方程分析 · 数学 2014-07-31 Herbert Egger , Matthias Schlottbom

The 3D incompressible Euler equations in a bounded domain are most often supplemented with impermeable boundary conditions, which constrain the fluid to neither enter nor leave the domain. We establish well-posedness with inflow, outflow of…

偏微分方程分析 · 数学 2024-12-19 Gung-Min Gie , James P. Kelliher , Anna L. Mazzucato

The existence of weak solutions to the Navier-Stokes-Fourier system describing the stationary states of a compressible, viscous, and heat conducting fluid in bounded 2D-domains is shown under fairly general and physically relevant…

偏微分方程分析 · 数学 2019-02-28 I. S. Ciuperca , E. Feireisl , M. Jai , A. Petrov

The aim of the paper is to construct and justify asymptotic approximations for solutions to quasilinear convection-diffusion problems with a predominance of nonlinear convective flow in a thin cylinder, where an inhomogeneous nonlinear…

偏微分方程分析 · 数学 2024-11-06 Taras Mel'nyk , Christian Rohde

We study the nonlinear steady Boltzmann equation in the half space, with phase transition and Dirichlet boundary condition. In particular, we study the regularity of the solution to the half-space problem in the situation that the gas is in…

偏微分方程分析 · 数学 2025-02-24 Hongxu Chen

We investigate a steady flow of a viscous compressible fluid with inflow boundary condition on the density and inhomogeneous slip boundary conditions on the velocity in a cylindrical domain $\Omega = \Omega_0 \times (0,L) \in \mathbb{R}^3$.…

数学物理 · 物理学 2009-07-24 Tomasz Piasecki

We study the flow of an incompressible liquid film down a wavy incline. Applying a Galerkin method with only one ansatz function to the Navier-Stokes equations we derive a second order weighted residual integral boundary layer equation,…

偏微分方程分析 · 数学 2015-05-13 Tobias Häcker , Hannes Uecker

We consider single-file diffusion in an open system with two species $A,B$ of particles. At the boundaries we assume different reservoir densities which drive the system into a non-equilibrium steady state. As a model we use an…

统计力学 · 物理学 2007-05-23 A. Brzank , G. M. Schütz

We present a formal derivation of a drift-diffusion model for stationary electron transport in graphene, in presence of sharp potential profiles, such as barriers and steps. Assuming the electric potential to have steep variations within a…

数学物理 · 物理学 2020-06-02 Luigi Barletti , Claudia Negulescu

We present an extended version of an invited talk given on the International Conference "Turbulent Mixing and Beyond". The dynamical and statistical description of stably stratified turbulent boundary layers with the important example of…

流体动力学 · 物理学 2009-02-18 Victor S. L'vov , Itamar Procaccia , Oleksii Rudenko

In this paper, we are concerned with the validity of Prandtl boundary layer expansion for the solutions to two dimensional (2D) steady viscous incompressible magnetohydrodynamics (MHD) equations in a domain $\{(X, Y)\in[0,…

偏微分方程分析 · 数学 2020-01-20 Shijin Ding , Zhilin Lin , Feng Xie

We develop an $\e$-regularity theory at the boundary for a general class of Monge-Amp\`ere type equations arising in optimal transportation. As a corollary we deduce that optimal transport maps between H\"older densities supported on $C^2$…

偏微分方程分析 · 数学 2014-12-19 Shibing Chen , Alessio Figalli

We prove the existence and uniqueness of strong solutions to the steady isentropic compressible Navier-Stokes equations with inflow boundary conditions for density and mixed boundary conditions for the velocity around a shear flow. In…

偏微分方程分析 · 数学 2022-04-19 Wen-Gang Yang

We investigate the regularity issue for the diffuse reflection boundary problem to the stationary linearized Boltzmann equation for hard sphere potential, cutoff hard potential, or cutoff Maxwellian molecular gases in a strictly convex…

偏微分方程分析 · 数学 2018-03-13 I-Kun Chen , Chun-Hsiung Hsia , Daisuke Kawagoe

We consider a steady, geophysical 2D fluid in a domain, and focus on its western boundary layer, which is formally governed by a variant of the Prandtl equation. By using the von Mises change of variables, we show that this equation is…

偏微分方程分析 · 数学 2016-03-17 Anne-Laure Dalibard , Matthew Paddick