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We consider here time-dependent three-dimensional stratified geophysical water flows of finite depth over a variable bottom with a free surface and an interface (separating two layers of constant and different densities). Under the…

偏微分方程分析 · 数学 2023-10-12 Calin Martin

We consider the multidimensional generalised stochastic Burgers equation in the space-periodic setting: $ \partial \mathbf{u}/\partial t+$ $(\nabla f(\mathbf{u}) \cdot \nabla)$ $\mathbf{u} -\nu \Delta \mathbf{u}=$ $\nabla \eta,\quad t \geq…

偏微分方程分析 · 数学 2015-10-07 Alexandre Boritchev

In this article, we study an inverse problem for the following convective Brinkman-Forchheimer (CBF) equations: \begin{align*} \boldsymbol{u}_t-\mu…

偏微分方程分析 · 数学 2021-07-12 Pardeep Kumar , Manil T. Mohan

Gathering together some existing results, we show that the solutions to the one-dimensional Burgers equation converge for long times towards the stationary solutions to the steady Burgers equation, whose Fourier spectrum is not integrable.…

偏微分方程分析 · 数学 2020-04-07 Roberta Bianchini , Anne-Laure Dalibard

It is shown how a complete set of hydrodynamic equations describing an unsteady three-dimensional viscous flow nearby a solid body, can be reduced to a closed system of surface equations using the method of dimension reduction of…

流体动力学 · 物理学 2014-08-04 Maxim Zaytsev , Vyacheslav Akkerman

Quadratic flows have the unique property of uniform strain and are commonly used in turbulence modeling and hydrodynamic analysis. While previous application focused on two-dimensional homogeneous fluid, this study examines the geometric…

流体动力学 · 物理学 2017-03-30 Che Sun

Recently there has been an increasing interest for a better understanding of ultra low Reynolds number flows. In this context we present a new setup which allows to efficiently solve the stationary incompressible Navier-Stokes equations in…

流体动力学 · 物理学 2015-05-13 Vincent Heuveline , Peter Wittwer

The three-dimensional equations of compressible magnetohydrodynamic isentropic flows are considered. An initial-boundary value problem is studied in a bounded domain with large data. The existence and large-time behavior of global weak…

偏微分方程分析 · 数学 2015-05-13 Xianpeng Hu , Dehua Wang

We consider a boundary value problem of a stationary advection equation in a bounded domain with Lipschitz boundary. It is known to be well-posed in $L^p$-based function spaces for $1 < p < \infty$ under the separation condition of the…

偏微分方程分析 · 数学 2026-01-14 Masaki Imagawa , Daisuke Kawagoe

The isentropic compressible Navier-Stokes system subject to the Navier-slip boundary conditions is considered in a general three-dimensional exterior domain. For the density approaches far-field vacuum initially and the viscosities are…

偏微分方程分析 · 数学 2026-02-05 Jiaxu Li , Boqiang Lü , Bing Yuan

This article proves the well posedness of the boundary value problemthat arises when PML algorithms are applied to Pauli's equationswith a three dimensional rectangle as computational domain. The absorptionsare positive near the boundary…

偏微分方程分析 · 数学 2022-02-18 Laurence Halpern , Jeffrey Rauch

We establish that solitary stationary waves in three dimensional viscous incompressible fluids are a generic phenomenon and that every such solution is a vanishing wave-speed limit along a one parameter family of traveling waves. The…

偏微分方程分析 · 数学 2023-09-13 Noah Stevenson , Ian Tice

We study well-posedness and ill-posedness for Cauchy problem of the three-dimensional viscous primitive equations describing the large scale ocean and atmosphere dynamics. By using the Littlewood-Paley analysis technique, in particular…

偏微分方程分析 · 数学 2015-10-27 Jinyi Sun , Shangbin Cui

To improve models of the structure and evolution of stellar and planetary interiors, it is important to quantify transport by strongly stratified turbulence in low Prandtl number fluids. Recent numerical studies have shown evidence for…

流体动力学 · 物理学 2024-10-24 Kasturi Shah

A basic question about regularity of Boltzmann solutions in the presence of physical boundary conditions has been open due to characteristic nature of the boundary as well as the non-local mixing of the collision operator. Consider the…

偏微分方程分析 · 数学 2017-01-31 Yan Guo , Chanwoo Kim , Daniela Tonon , Ariane Trescases

We study in this paper the well-posedness and stability for two linear Schr\"odinger equations in $d$-dimensional open bounded domain under Dirichlet boundary conditions with an infinite memory. First, we establish the well-posedness in the…

偏微分方程分析 · 数学 2023-01-20 Marcelo Cavalcanti , Valeria Domingos Cavalcanti , Aissa Guesmia , Mauricio Sepúlveda

We establish the local Hadamard well-posedness of a certain third-order nonlinear Schr\"odinger equation with a multi-term linear part and a general power nonlinearity known as the higher-order nonlinear Schr\"odinger equation, formulated…

偏微分方程分析 · 数学 2026-01-19 Chris Mayo , Dionyssios Mantzavinos , Türker Ozsarı

A linear stochastic vector advection equation is considered. The equation may model a passive magnetic field in a random fluid. The driving velocity field is a integrable to a certain power and the noise is infinite dimensional. We prove…

偏微分方程分析 · 数学 2017-05-02 Franco Flandoli , Christian Olivera

In this paper we provide a complete local well-posedness theory for the free boundary relativistic Euler equations with a physical vacuum boundary on a Minkowski background. Specifically, we establish the following results: (i) local…

偏微分方程分析 · 数学 2022-07-08 Marcelo M. Disconzi , Mihaela Ifrim , Daniel Tataru

In this paper, we establish the mathematical validity of the Prandtl boundary layer theory for a class of nonlinear plane parallel flow of nonhomogeneous incompressible Navier-Stokes equations. The convergence for the density and velocity…

偏微分方程分析 · 数学 2020-12-23 Shijin Ding , Zhilin Lin , Dongjuan Niu