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By applying the delicate \textit{a priori} estimates for the equations of $(\Phi,\Gamma)$, which is introduced in the previous work, we obtain some multi-scale regularity criteria of the swirl component $u^{\theta}$ for the 3D axisymmetric…

Analysis of PDEs · Mathematics 2018-02-27 Daoyuan Fang , Hui Chen , Ting Zhang

We are concerned with the global existence theory for spherically symmetric solutions of the multidimensional compressible Euler equations with large initial data of positive far-field density. The central feature of the solutions is the…

Analysis of PDEs · Mathematics 2022-02-17 Gui-Qiang G. Chen , Yong Wang

In this paper, we study the regularity problem of the 3D incompressible Navier\~nStokes equations. We prove that the strong solution exists globally for new regularity criteria. For negligible forces, we give an improvement of the known…

Analysis of PDEs · Mathematics 2014-03-18 Abdelhafid Younsi

The paper is aimed at analysing a singular perturbation of the Navier-Stokes equations on a compact closed manifold. The case of compact smooth manifolds with boundary under the Dirichlet conditions is also included. Global existence and…

Analysis of PDEs · Mathematics 2019-06-25 Alexander Shlapunov , Nikolai Tarkhanov

In this paper we prove a theorem of global time-extension for the local classical solution of Navier-Stokes's evolution problem in $\Real^n$ with $n\geqslant2$ for incompressible fluids subjected to external forces and regular initial…

Analysis of PDEs · Mathematics 2011-09-02 Ulisse Iotti

We construct forward self-similar solutions (expanders) for the compressible Navier-Stokes equations. Some of these self-similar solutions are smooth, while others exhibit a singularity do to cavitation at the origin.

Analysis of PDEs · Mathematics 2019-03-26 Pierre Germain , Tsukasa Iwabuchi

Landau solutions are special solutions to the stationary incompressible Navier-Stokes equations in the three dimensional space excluding the origin. They are self-similar and axisymmetric with no swirl. In fact, any self-similar smooth…

Analysis of PDEs · Mathematics 2020-11-06 Hyunju Kwon , Tai-Peng Tsai

We consider Navier-Stokes equations for compressible viscous fluids in one dimension. We prove the existence of global strong solution with large initial data for the shallow water system. The key ingredient of the proof relies to a new…

Analysis of PDEs · Mathematics 2018-04-02 Boris Haspot

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…

General Mathematics · Mathematics 2022-10-28 Yanyou Qiao

In this paper we will discuss the existence for the classical solution of the Navier-Stokes equations. First, we transform it into generalized integral equations. Next, we discuss the existence of the classical solution by Leray-Schauder…

General Mathematics · Mathematics 2024-05-10 Jianfeng Wang

In the note, a new regularity condition for axisymmetric solutions to the non-stationary 3D Navier-Stokes equations is proven. It is slightly supercritical.

Analysis of PDEs · Mathematics 2022-02-09 G. Seregin

The Navier-Stokes (NS) problem consists of finding a vector-function $v$ from the Navier-Stokes equations. The solution $v$ to NS problem is defined in this paper as the solution to an integral equation. The kernel $G$ of this equation…

Analysis of PDEs · Mathematics 2017-05-23 A. G. Ramm

We discuss the regularity of solutions of 2D incompressible Navier-Stokes equations forced by singular forces. The problem is motivated by the study of complex fluids modeled by the Navier-Stokes equations coupled to a nonlinear…

Analysis of PDEs · Mathematics 2009-01-23 Peter Constantin , Gregory Seregin

The problem of describing the behavior of the solutions to the Navier-Stokes equations in three space dimensions has always been borderline. From one side, due to the viscosity term, smooth data seem to produce solutions with an everlasting…

Fluid Dynamics · Physics 2011-12-06 Daniele Funaro

We develop mathematical methods which allow us to study asymptotic properties of solutions to the three dimensional Navier-Stokes system for incompressible fluid in the whole three dimensional space. We deal either with the Cauchy problem…

Analysis of PDEs · Mathematics 2020-12-24 Marco Cannone , Grzegorz Karch , Dominika Pilarczyk , Gang Wu

We prove the existence of small amplitude, time-quasi-periodic solutions (invariant tori) for the incompressible Navier-Stokes equation on the $d$-dimensional torus $\T^d$, with a small, quasi-periodic in time external force. We also show…

Analysis of PDEs · Mathematics 2020-05-28 Riccardo Montalto

We show existence and regularity result for the Navier Stokes system for small data in the space $\Phi(2)$, and we show relations with some classical results.

Analysis of PDEs · Mathematics 2009-03-03 Jean Cortissoz

A modified version of the three dimensional Navier-Stokes equations is considered with periodic boundary conditions. A bounded constant delay is introduced into the convective term, that produces a regularizing effect on the solution. In…

Analysis of PDEs · Mathematics 2018-08-01 Hakima Bessaih , María J. Garrido-Atienza , Björn Schmalfuss

We consider the incompressible axisymmetric Navier-Stokes equations with swirl as an idealized model for tornado-like flows. Assuming an infinite vortex line which interacts with a boundary surface resembles the tornado core, we look for…

Analysis of PDEs · Mathematics 2023-11-20 Theodoros Katsaounis , Ioanna Mousikou , Athanasios E. Tzavaras

A global time-discretized scheme for the Navier-Stokes equation system in its Leray projection form is defined. It is shown that the scheme converges to a bounded global classical solution for smooth data which have polynomial decay at…

Analysis of PDEs · Mathematics 2012-07-12 Joerg Kampen