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We prove the inviscid limit for the incompressible Navier-Stokes equations for data that are analytic only near the boundary in a general two-dimensional bounded domain. Our proof is direct, using the vorticity formulation with a nonlocal…

偏微分方程分析 · 数学 2021-11-30 Claude Bardos , Trinh T. Nguyen , Toan T. Nguyen , Edriss S. Titi

We consider the Navier-Stokes equations in vorticity form in $\mathbb{R}^2$ with a white noise forcing term of multiplicative type, whose spatial covariance is not regular enough to apply the It\^o calculus in $L^q$ spaces, $1<q<\infty$. We…

概率论 · 数学 2018-03-06 Benedetta Ferrario , Margherita Zanella

We prove existence of a unique global-in-time weak solutions of the Navier-Stokes equations that govern the motion of a compressible viscous fluid with density-dependent viscosity in two-dimensional space. The initial velocity belongs to…

偏微分方程分析 · 数学 2024-09-18 Sagbo Marcel Zodji

We show that the eigenvalues of the Stokes operator in a domain with a small hole converge to the eigenvalues of the Stokes operator in the whole domain, when the diameter of the hole tends to 0. The convergence of the eigenspaces and the…

偏微分方程分析 · 数学 2020-11-24 Alexandre Munnier

The two-phase free boundary problem for the Navier-Stokes system is considered in a situation where the initial interface is close to a halfplane. By means of $L_p$-maximal regularity of the underlying linear problem we show local…

偏微分方程分析 · 数学 2016-12-20 Jan Pruess , Gieri Simonett

Axially symmetric solutions to the Navier-Stokes equations in a bounded cylinder are considered. On the boundary the normal component of the velocity and he angular components of the velocity and vorticity are assumed to vanish. If the norm…

偏微分方程分析 · 数学 2023-02-03 Bernard Nowakowski , Wojciech M. Zajączkowski

We generalize pressure boundary conditions of an $\varepsilon$-Stokes problem. Our $\varepsilon$-Stokes problem connects the classical Stokes problem and the corresponding pressure-Poisson equation using one parameter $\varepsilon>0$. For…

偏微分方程分析 · 数学 2018-12-27 Masato Kimura , Kazunori Matsui , Adrian Muntean , Hirofumi Notsu

In this work, we study a boundary control problem for the evolutionary Navier-Stokes equations, under mixed boundary conditions, in two dimensions. The cost functional here considered is of quadratic type, depending on both state and…

最优化与控制 · 数学 2024-10-02 Telma Guerra , Irene Marín-Gayte , Jorge Tiago

We study the Stokes--Poisson--Boltzmann equations with Dirichlet and Navier boundary conditions. The system consists of the incompressible Stokes equations coupled with a nonlinear Poisson--Boltzmann equation through electrostatic forcing…

数值分析 · 数学 2026-04-15 Ayush Agrawal , Aparna Bansal , D. N. Pandey

We consider ionic electrodiffusion in fluids, described by the Nernst-Planck-Navier-Stokes system in bounded domains, in two dimensions, with Dirichlet boundary conditions for the Navier-Stokes and Poisson equations, and blocking (vanishing…

偏微分方程分析 · 数学 2018-12-26 Peter Constantin , Mihaela Ignatova

Due to computational complexity, fluid flow problems are mostly defined on a bounded domain. Hence, capturing fluid outflow calls for imposing an appropriate condition on the boundary where the said outflow is prescribed. Usually, the…

偏微分方程分析 · 数学 2021-09-22 John Sebastian H. Simon , Hirofumi Notsu

We establish a Liouville type result for a backward global solution to the Navier-Stokes equations in the half plane with the no-slip boundary condition. No assumptions on spatial decay for the vorticity nor the velocity field are imposed.…

偏微分方程分析 · 数学 2013-10-25 Yoshikazu Giga , Pen-Yuan Hsu , Yasunori Maekawa

This paper discusses the solvability (global in time) of the initial-boundary value problem of the Navier-stokes equations in the half space when the initial data $ h\in \dot{ B}_{q \sigma}^{\alpha-\frac{2}{q}}(\R_+)$ and the boundary data…

偏微分方程分析 · 数学 2018-06-08 Tongkeun Chang , Bum Ja Jin

We consider the incompressible Navier-Stokes equations with the Dirichlet boundary condition in an exterior domain of $\mathbb{R}^n$ with $n\geq2$. We compare the long-time behaviour of solutions to this initial-boundary value problem with…

偏微分方程分析 · 数学 2017-05-17 Dragos Iftimie , Grzegorz Karch , Christophe Lacave

We consider a velocity tracking problem for stochastic Navier-Stokes equations in a 2D-bounded domain. The control acts on the boundary through an injection-suction device with uncertainty, which acts in accordance with the non-homogeneous…

概率论 · 数学 2024-09-04 Nikolai Chemetov , Fernanda Cipriano

Numerical and analytical studies of decaying, two-dimensional (2D) Navier-Stokes (NS) turbulence at high Reynolds numbers are reported. The effort is to determine computable distinctions between two different formulations of maximum entropy…

流体动力学 · 物理学 2009-11-07 Z. Yin , D. C. Montgomery , H. J. H. Clercx

We consider the inviscid limit for the two-dimensional incompressible Navier-Stokes equation in the particular case where the initial flow is a finite collection of point vortices. We suppose that the initial positions and the circulations…

偏微分方程分析 · 数学 2015-05-13 Thierry Gallay

We establish several boundary $\varepsilon$-regularity criteria for suitable weak solutions for the 3D incompressible Navier-Stokes equations in a half cylinder with the Dirichlet boundary condition on the flat boundary. Our proofs are…

偏微分方程分析 · 数学 2018-12-27 Hongjie Dong , Kunrui Wang

In this paper, we establish the existence of Stokes waves with piecewise smooth vorticity in a two-dimensional, infinitely deep fluid domain. These waves represent traveling water waves propagating over sheared currents in a semi-infinite…

偏微分方程分析 · 数学 2025-11-07 Changfeng Gui , Jun Wang , Wen Yang , Yong Zhang

Cellular suspensions such as dense bacterial flows exhibit a turbulence-like phase under certain conditions. We study this phenomenon of "active turbulence" statistically by using numerical tools. Following Wensink et al. [Proc. Natl. Acad.…

流体动力学 · 物理学 2018-02-15 Martin James , Michael Wilczek
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