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We consider the Stokes equations subject to Navier boundary conditions on a two-dimensional wedge domain with opening angle $\theta_0 \in (0,\,\pi)$. We prove existence and uniqueness of solutions with optimal regularity in an…

偏微分方程分析 · 数学 2024-11-01 Matthias Köhne , Jürgen Saal , Laura Westermann

Singularity of Navier-Stokes equations is uncovered for the first time which explains the mechanism of transition of a smooth laminar flow to turbulence. It is found that when an inflection point is formed on the velocity profile in…

流体动力学 · 物理学 2020-08-20 Hua-Shu Dou

In this paper, we establish the global existence and uniqueness of solution to $2$-D inhomogeneous incompressible Navier-Stokes equations \eqref{1.2} with initial data in the critical spaces. Precisely, under the assumption that the initial…

偏微分方程分析 · 数学 2023-12-08 Hammadi Abidi , Guilong Gui , Ping Zhang

The conventional boundary conditions at the interface between two flowing liquids include continuity of the tangential velocity. We have tested this assumption with molecular dynamics simulations of Couette and Poiseuille flows of…

软凝聚态物质 · 物理学 2009-11-11 Joel Koplik , Jayanth R. Banavar

We introduce a numerical strategy to study the evolution of 2D water waves in the presence of a plunging jet. The free-surface Navier-Stokes solution is obtained with a finite but small viscosity. We observe the formation of a surface…

流体动力学 · 物理学 2024-05-01 Alan Riquier , Emmanuel Dormy

Global-in-time smooth self-similar solutions to the 3D Navier-Stokes equations are constructed emanating from homogeneous of degree -1 arbitrary large initial data belonging only to the closure of the test functions in the space of…

偏微分方程分析 · 数学 2007-05-23 Z. Grujic

It is well known that the Navier-Stokes equations have unique global strong solutions for standard domains when initial data are small in $L^n_\sigma$. Global well-posedness has been extended to rough initial data in larger critical spaces.…

偏微分方程分析 · 数学 2024-08-06 Tongkeun Chang , Bum Ja Jin

The Navier-Stokes equations in the primitive formulation for incompressible flow describe the evolution of velocity and pressure, without recourse to vorticity. We show that, beyond the finite Leray-Hopf regularity interval, every…

偏微分方程分析 · 数学 2021-03-30 F. Lam

Whether singularities can form in fluids remains a foundational unanswered question in mathematics. This phenomenon occurs when solutions to governing equations, such as the 3D Euler equations, develop infinite gradients from smooth initial…

For the N>=2 dimensional incompressible Naver-Stokes Equation, We have got its solution as a power series of time t, in which the coefficients are all known functions determined only by the initial velocity v0. We also prove that the…

综合数学 · 数学 2022-10-28 Yanyou Qiao

We construct self-similar solutions to the 2D Navier--Stokes equations evolving from arbitrarily large $-1$--homogeneous initial data and present numerical evidence for their non-uniqueness.

偏微分方程分析 · 数学 2026-01-07 Dallas Albritton , Julien Guillod , Mikhail Korobkov , Xiao Ren

Numerical solutions of the laminar Prandtl boundary-layer and Navier-Stokes equations are considered for the case of the two-dimensional uniform flow past an impulsively-started circular cylinder. We show how Prandtl's solution develops a…

流体动力学 · 物理学 2014-04-21 Francesco Gargano , Marco Sammartino , Vincenzo Sciacca , Kevin W. Cassel

In this article, we study the solutions of the damped Navier--Stokes equation with Navier boundary condition in a bounded domain $\Omega$ in $\mathbb{R}^3$ with smooth boundary. The existence of the solutions is global with the damped term…

偏微分方程分析 · 数学 2021-12-06 Rajib Haloi , Subha Pal

In this paper, we investigate the vanishing viscosity limit for solutions to the Navier-Stokes equations with a Navier slip boundary condition on general compact and smooth domains in $\mathbf{R}^3$. We first obtain the higher order…

偏微分方程分析 · 数学 2015-06-03 Lizhen Wang , Zhouping Xin , Aibin Zang

A free boundary problem for the one-dimensional compressible Navier-Stokes equations is investigated. The asymptotic stability of the viscous shock wave is established under some smallness conditions. The proof is given by an elementary…

偏微分方程分析 · 数学 2009-12-25 Feimin Huang , Xiaoding Shi , Yi Wang

We prove the global existence and uniqueness of smooth solutions to the one-dimensional barotropic Navier-Stokes system with degenerate viscosity $\mu(\rho)=\rho^\alpha$. We establish that the smooth solutions have possibly two different…

偏微分方程分析 · 数学 2020-04-22 Moon-Jin Kang , Alexis Vasseur

In this paper, we study the three-dimensional axisymmetric compressible Navier-Stokes equations with slip boundary conditions in a cylindrical domain excluding the axis. We establish the global existence and exponential decay of weak,…

偏微分方程分析 · 数学 2025-11-19 Qinghao Lei

We prove the existence and uniqueness of solutions to the time-dependent incompressible Navier-Stokes equations with a free-boundary governed by surface tension. The solution is found using a topological fixed-point theorem for a nonlinear…

偏微分方程分析 · 数学 2007-05-23 Daniel Coutand , Steve Shkoller

This paper provides a rigorous mathematical analysis of the global regularity problem for the 3D incompressible Navier-Stokes (NS) equations, specifically addressing the conditions under which smooth initial data may lead to a loss of…

偏微分方程分析 · 数学 2026-04-08 Chio Chon Kit

We study a model describing the motion of the fluid in a lake, assuming inflow-outflow effects across the bottom, the porous coast and the inflows and outflows of rivers. We prove the global in time existence result for this model. The…

偏微分方程分析 · 数学 2024-10-01 N. V. Chemetov , F. Cipriano , S. Gavrilyuk