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This paper is denoted to the study of dynamical behavior near explicit finite time blowup solutions for three dimensional incompressible Magnetohydrodynamics (MHD) equations. More precisely, we find a family of explicit finite time blowup…

偏微分方程分析 · 数学 2019-07-02 Weiping Yan

In this paper, we prove a sharp and strong non-uniqueness for a class of weak solutions to the three-dimensional magneto-hydrodynamic (MHD) system. More precisely, we show that any weak solution $(v,b)\in L^p_tL^{\infty}_x$ is non-unique in…

偏微分方程分析 · 数学 2022-08-31 Yao Nie , Weikui Ye

In this note, we show the existence of regular solutions to the stationary version of the Navier-Stokes system for compressible fluids with a density dependent viscosity, known as the shallow water equations. For arbitrary large forcing we…

偏微分方程分析 · 数学 2016-07-15 Šimon Axmann , Piotr B. Mucha , Milan Pokorný

We are concerned with the construction of global-in-time strong solutions for the incompressible Vlasov-Navier-Stokes system in the whole three-dimensional space. One of our goals is to establish that small initial velocities with critical…

偏微分方程分析 · 数学 2026-01-23 Raphaël Danchin

We treat the heat equation with singular drift terms and its generalization: the linearized Navier-Stokes system. In the first case, we obtain boundedness of weak solutions for highly singular, "supercritical" data. In the second case, we…

偏微分方程分析 · 数学 2019-06-03 Qi S Zhang

First-order convergence in time and space is proved for a fully discrete semi-implicit finite element method for the two-dimensional Navier--Stokes equations with $L^2$ initial data in convex polygonal domains, without extra regularity…

数值分析 · 数学 2021-01-19 Buyang Li , Shu Ma , Yuki Ueda

Physical experiments and numerical simulations have observed a remarkable stabilizing phenomenon: a background magnetic field stabilizes and damps electrically conducting fluids. This paper intends to establish this phenomenon as a…

偏微分方程分析 · 数学 2022-11-01 Hongxia Lin , Jiahong Wu , Yi Zhu

We study mild solutions to the Navier-Stokes equation on the $n$-dimensional hyperbolic space $\mathbb{H}^n$, $n \geq 2$. We use dispersive and smoothing estimates proved by Pierfelice on a class of complete Riemannian manifolds to extend…

偏微分方程分析 · 数学 2020-11-18 Braden Balentine

We construct weak solutions to the ideal magneto-hydrodynamic (MHD) equations which have finite total energy, and whose magnetic helicity is not a constant function of time. In view of Taylor's conjecture, this proves that there exist…

偏微分方程分析 · 数学 2019-07-25 Rajendra Beekie , Tristan Buckmaster , Vlad Vicol

We study the Stokes system with the localized boundary data in the half-space. We are concerned with the local regularity of its solution near the boundary away from the support of the given boundary data which are product forms of each…

偏微分方程分析 · 数学 2023-07-06 Kyungkeun Kang , Chanhong Min

In this paper, we propose and analyze a temporally second-order accurate, fully discrete finite element method for the magnetohydrodynamic (MHD) equations. A modified Crank--Nicolson method is used to discretize the model and appropriate…

数值分析 · 数学 2021-08-13 Cheng Wang , Jilu Wang , Zeyu Xia , Liwei Xu

In this paper, we deal with the $2\frac{1}{2}$ dimensional Hall MHD by taking the velocity field $u$ and the magnetic field $B$ of the form $u(t,x,y)=\left(\nabla^{\perp}\phi(t,x,y), W(t,x,y)\right)$ and…

偏微分方程分析 · 数学 2021-11-03 Hantaek Bae , Kyungkeun Kang

A main result of this paper establishes the global stability of the 3D MHD equations with mixed partial dissipation near a background magnetic field in the domain $\Omega=\mathbb{T}^2\times\mathbb{R}$ with $\mathbb{T}^2=[0, 1]^2$. More…

偏微分方程分析 · 数学 2024-02-05 Xuemin Deng , Yuelong Xiao , Aibin Zang

This paper presents a new approach to the local well-posedness of the $1d$ compressible Navier-Stokes systems with rough initial data. Our approach is based on establishing some smoothing and Lipschitz-type estimates for the $1d$ parabolic…

偏微分方程分析 · 数学 2022-06-29 Ke Chen , Ruilin Hu , Quoc-Hung Nguyen

In this paper, we consider a two-dimensional non-resistive magnetohydrodynamic model, taking the fluctuation of absolute temperature into account. Combining the method of weak convergence developed by Lions [20], Feireisl et al. [7, 8] from…

偏微分方程分析 · 数学 2020-09-15 Yang Li , Yongzhong Sun

For the equations of a planar magnetohydrodynamic (MHD) compressible flow with the viscosity depending on the specific volume of the gas and the heat conductivity being proportional to a positive power of the temperature, we obtain global…

偏微分方程分析 · 数学 2024-06-19 Yuebo Cao , Yi Peng , Ying Sun

We establish global well-posedness of strong solutions for the nonhomogeneous magnetohydrodynamic equations with density-dependent viscosity and initial density allowing vanish in two-dimensional (2D) bounded domains. Applying delicate…

偏微分方程分析 · 数学 2024-06-19 Xin Zhong

We investigate the global unique Fujita-Kato solution to the 3-D inhomogeneous incompressible Navier-Stokes equations with initial velocity $u_0$ being sufficiently small in critical spaces and with initial density being bounded from above…

偏微分方程分析 · 数学 2024-10-15 Hammadi Abidi , Guilong Gui , Ping Zhang

In this paper, the Cauchy's problem for fractional MHD system with the Hall and ion-slip effects is considered. By exploring the structure of semilinear and quasilinear terms, we prove the global existence of solutions for a class of large…

偏微分方程分析 · 数学 2020-02-27 Huali Zhang

This paper is dedicated to the study of both viscous compressible barotropic fluids and Navier-Stokes equation with dependent density, when the viscosity coefficients are variable, in dimension $d\geq2$. We aim at proving the local and…

偏微分方程分析 · 数学 2011-07-13 Frédéric Charve , Boris Haspot