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We present some new regularity criteria for ``suitable weak solutions'' of the Navier-Stokes equations near the boundary in dimension three. We prove that suitable weak solutions are H\"older continuous up to the boundary provided that the…

偏微分方程分析 · 数学 2007-05-23 Stephen Gustafson , Kyungkeun Kang , Tai-Peng Tsai

In this article, we establish several almost critical regularity conditions such that the weak solutions of the 3D Navier-Stokes equations become regular, based on one component of the solutions, say $u_3$ and $\partial_3u_3$.

偏微分方程分析 · 数学 2013-12-31 Daoyuan Fang , Chenyin Qian

We study the Cauchy problem for the 3D Navier-Stokes equations, and prove some scalaring-invariant regularity criteria involving only one velocity component.

偏微分方程分析 · 数学 2018-07-10 Zujin Zhang

We study regularity criteria for the $d$-dimensional incompressible Navier-Stokes equations. We prove if $u\in L_{\infty}^tL_d^x((0,T)\times \mathbb{R}^d_+)$ is a Leray-Hopf weak solution vanishing on the boundary and the pressure $p$…

偏微分方程分析 · 数学 2018-09-19 Hongjie Dong , Kunrui Wang

In this paper, we are concerned with regularity of suitable weak solutions of the 3D Navier-Stokes equations in Lorentz spaces. We obtain $\varepsilon$-regularity criteria in terms of either the velocity, the gradient of the velocity, the…

偏微分方程分析 · 数学 2019-09-25 Yanqing Wang , Wei Wei , Huan Yu

In this paper, by invoking the appropriate decomposition of pressure to exploit the energy hidden in pressure, we present some new $\varepsilon$-regularity criteria for suitable weak solutions of the 3D Navier-Stokes equations at one scale:…

偏微分方程分析 · 数学 2019-06-13 Cheng He , Yanqing Wang , Daoguo Zhou

In this paper, we derive regular criteria via pressure or gradient of the velocity in Lorentz spaces to the 3D Navier-Stokes equations. It is shown that a Leray-Hopf weak solution is regular on $(0,T]$ provided that either the norm…

偏微分方程分析 · 数学 2020-03-18 Xiang Ji , Yanqing Wang , Wei Wei

We consider the Cauchy problem for the incompressible Navier-Stokes equations in $\R^3$, and provide a sufficient condition to ensure the smoothness of the solution. It involves only two entries of the velocity Hessian.

偏微分方程分析 · 数学 2018-07-10 Zujin Zhang

It is shown in this paper that suitable weak solutions to the 6D steady incompressible Navier-Stokes are H\"{o}lder continuous at $0$ provided that $\int_{B_1}|u(x)|^3dx+\int_{B_1}|f(x)|^qdx$ or $\int_{B_1}|\nabla…

偏微分方程分析 · 数学 2021-11-19 Shuai Li , Wendong Wang

We prove partial regularity of suitable weak solutions to the Navier--Stokes equations at the boundary in irregular domains. In particular, we provide a criterion which yields continuity of the velocity field in a boundary point and obtain…

偏微分方程分析 · 数学 2022-10-04 Dominic Breit

We give a new concise proof of a certain one-scale epsilon regularity criterion using weak-strong uniqueness for solutions of the Navier-Stokes equations with non-zero boundary conditions. It is inspired by an analogous approach for the…

偏微分方程分析 · 数学 2023-06-07 Dallas Albritton , Tobias Barker , Christophe Prange

In this paper, we study regularity of weak solutions to the incompressible Boussinesq equations in $\mathbb{R}^{3}\times (0,T)$. The main goal is to establish the regularity criterion in terms of one velocity component and the gradient of…

偏微分方程分析 · 数学 2020-05-29 Ravi P. Agarwal , S. Gala , Maria Alessandra Ragusa

In this paper, we consider the local regularity of suitable weak solutions to the 3D incompressible Navier-Stokes equations. By means of the local pressure projection introduced by Wolf in [15,16], we present a $\varepsilon$-regularity…

偏微分方程分析 · 数学 2019-05-01 Quansen Jiu , Yanqing Wang , Daoguo Zhou

Consider the time-periodic viscous incompressible fluid flow past a body with non-zero velocity at infinity. This article gives sufficient conditions such that weak solutions to this problem are smooth. Since time-periodic solutions do not…

偏微分方程分析 · 数学 2022-12-02 Thomas Eiter

The paper deals with the regularity criterion for the weak solutions to the 3D Boussinesq equations in terms of the partial derivatives in Besov spaces. It is proved that the weak solution $(u,\theta )$ becomes regular provided that…

偏微分方程分析 · 数学 2020-05-12 A. M. Alghamdi , I. Ben Omrane , S. Gala , M. A. Ragusa

Regularity and uniqueness of weak solution of the compressible isentropic Navier-Stokes equations is proven for small time in dimension $N=2,3$ under periodic boundary conditions. In this paper, the initial density is not required to have a…

偏微分方程分析 · 数学 2010-01-12 Boris Haspot

We show that if v is an axially symmetric suitable weak solution to the Navier Stokes equations (in the sense of L. Caffarelli, R. Kohn & L. Nirenberg) such that the radial component of v has a higher regularity (i.e. satisfies weighted…

偏微分方程分析 · 数学 2010-03-17 Adam Kubica

We prove short time regularity of suitable weak solutions of 3D incompressible Navier-Stokes equations near a point where the initial data is locally in $L^3$. The result is applied to the regularity problems of solutions with uniformly…

偏微分方程分析 · 数学 2018-12-31 Kyungkeun Kang , Hideyuki Miura , Tai-Peng Tsai

We consider the 3D incompressible hypodissipative Navier-Stokes equations, when the dissipation is given as a fractional Laplacian $(-\Delta )^s$ for $s\in (\frac34,1)$, and we provide a new bootstrapping scheme that makes it possible to…

偏微分方程分析 · 数学 2023-07-07 Hyunju Kwon , Wojciech S. Ożański

In the present paper, we prove a sufficient condition of local regularity for suitable weak solutions to the Navier-Stokes equations having axial symmetry. Our condition is an axially symmetric analog of the so-called $L_{3,\infty}$-case in…

偏微分方程分析 · 数学 2007-05-23 Grigory Seregin , Wojciech Zajaczkowski