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Motivated by the work on stagnation-point type exact solutions (with infinite energy) of 3D Euler fluid equations by Gibbon et al. (1999) and the subsequent demonstration of finite-time blowup by Constantin (2006) we introduce a…

Fluid Dynamics · Physics 2022-02-15 Rachel M. Mulungye , Dan Lucas , Miguel D. Bustamante

The purpose of this paper is to study the incompressible non-resistive MHD equations in $\mathbb{R}^3$. We establish the global well-posedness of classical solutions if the initial data is axially symmetric and the swirl components of the…

Analysis of PDEs · Mathematics 2022-03-08 Xiaolian Ai , Zhouyu Li

Whether the 3D incompressible Euler equations can develop a finite time singularity from smooth initial data is one of the most challenging problems in nonlinear PDEs. In this paper, we present some new numerical evidence that the 3D…

Analysis of PDEs · Mathematics 2022-05-30 Thomas Y. Hou

This work focuses on the 3D incompressible magnetohydrodynamic (MHD) equations with mixed pressure-velocity-magnetic field in view of Lorentz spaces. Our main result shows the weak solution is regular, provided that $${\frac{\pi }{\left(…

Analysis of PDEs · Mathematics 2022-03-03 Ahmad M. Alghamdi , Sadek Gala , Maria Alessandra Ragusa

New exact solutions of the steady and incompressible 2D MHD equations in polar coordinates are presented. The solutions describe the process of reconnective magnetic annihilation in a curved current layer. They are particularly interesting…

Plasma Physics · Physics 2009-11-07 E. Tassi , V. S. Titov , G. Hornig

In this paper, we establish the global existence of smooth solutions of the three-dimensional MHD system for a class of large initial data. Both the initial velocity and magnetic field can be arbitrarily large in the critical norm.

Analysis of PDEs · Mathematics 2019-06-13 Yurui Lin , Huali Zhang , Yi Zhou

In \cite{ChCa}, Califano and Chiuderi conjectured that the energy of incompressible Magnetic hydrodynamical system is dissipated at a rate that is independent of the ohmic resistivity. The goal of this paper is to mathematically justify…

Analysis of PDEs · Mathematics 2018-07-04 Wen Deng , Ping Zhang

This paper is concerned with the Cauchy problem of the multi-dimensional incompressible magnetohydrodynamic equations with inhomogeneous density and fractional dissipation. It is shown that when $\alpha+\beta=1+\frac{n}{2}$ satisfying…

Analysis of PDEs · Mathematics 2021-07-09 Baoquan Yuan , Xueli Ke

We introduce a novel mechanism that reveals finite time singularities within the 1D De Gregorio model and the 3D incompressible Euler equations. Remarkably, we do not construct our blow up using self-similar coordinates, but build it from…

Analysis of PDEs · Mathematics 2023-10-25 Diego Córdoba , Luis Martínez-Zoroa , Fan Zheng

This paper is concerned with the blowup phenomenon of stochastic parabolic equations both on bounded domain and in the whole space. We introduce a new method to study the blowup phenomenon on bounded domain. Comparing with the existing…

Analysis of PDEs · Mathematics 2019-02-21 Guangying Lv , Jinlong Wei

In this paper, we investigate the Cauchy problem of the compressible non-resistive MHD on $\mathbb{R}^2$ with vacuum as far field density. We prove that the 2D Cauchy problem has a unique local strong solution provided the initial density…

Analysis of PDEs · Mathematics 2018-01-03 Mingtao Chen , Aibin Zang

In this paper, we are concerned with the two-dimensional (2D) incompressible magnetohydrodynamic (MHD) equations with velocity dissipation given by $(-\Delta)^{\alpha}$ and magnetic diffusion given by reducing about logarithmic diffusion…

Analysis of PDEs · Mathematics 2023-03-31 Chao Deng , Zhuan Ye , Baoquan Yuan , Jiefeng Zhao

The nonhomogeneous incompressible Magnetohydrodynamic Equations with density-dependent viscosity is studied in three-dimensional (3D) exterior domains with slip boundary conditions. The key is the constraint of an additional initial value…

Analysis of PDEs · Mathematics 2025-02-19 Bing Yuan , Rong Zhang , Peng Zhou

This paper concerns the Cauchy problem of the nonhomogeneous incompressible magnetohydrodynamic (MHD) equations on the whole two-dimensional (2D) space with vacuum as far field density. In particular, the initial density can have compact…

Analysis of PDEs · Mathematics 2015-06-17 Boqiang Lv , Zhonghai Xu , Xin Zhong

We prove finite-time vorticity blowup for smooth solutions of the 2D compressible Euler equations with smooth, localized, and non-vacuous initial data. The vorticity blowup occurs at the time of the first singularity, and is accompanied by…

Analysis of PDEs · Mathematics 2024-07-10 Jiajie Chen , Giorgio Cialdea , Steve Shkoller , Vlad Vicol

In this paper, we consider the 2D incompressible MHD equations with horizontal dissipation and horizontal magnetic diffusion. We establish local existence and uniqueness of solutions for initial data in $H^s$($s\geq 1$). The proof relays…

Analysis of PDEs · Mathematics 2024-12-02 Xiaoguang You

This paper is concerned with the blow-up property of solutions to an initial boundary value problem for a reaction diffusion equation with special diffusion processes. It is shown, under certain conditions on the initial data, that the…

Analysis of PDEs · Mathematics 2020-06-11 Yuzhu Han

This paper is concerned with existence of solutions to the incompressible non-resistive viscous magnetohydrodynamic (MHD) equations with large initial perturbations in there-dimensional (3D) periodic domains (in Lagrangian coordinates).…

Analysis of PDEs · Mathematics 2021-11-19 Fei Jiang , Song Jiang

We obtain the global well-posedness to the 3D incompressible magnetohydrodynamics (MHD) equations in Besov space with negative index of regularity. Particularly, we can get the global solutions for a new class of large initial data. As a…

Analysis of PDEs · Mathematics 2015-09-28 Renhui Wan

It is well known that the three-dimensional ideal magnetohydrodynamics (MHD) equations possess three magnetic invariants: (M) magnetic helicity, (C) cross helicity, and (P) the mean-square magnetic potential, in addition to the fundamental…

Mathematical Physics · Physics 2025-11-20 Naoki Sato , Ken Abe , Michio Yamada
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