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Whether or not the classical solutions of the two-dimensional (2D) incompressible magnetohydrodynamics (MHD) equations with only Laplacian magnetic diffusion (without velocity dissipation) are globally well-posed is a difficult problem and…

Analysis of PDEs · Mathematics 2023-03-31 Zhuan Ye

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

In this article we study the global regularity of 2D generalized magnetohydrodynamic equations (2D GMHD), in which the dissipation terms are $- \nu (- \triangle)^{\alpha} u$ and $- \kappa (-\triangle)^{\beta} b$. We show that smooth…

Analysis of PDEs · Mathematics 2013-02-28 Chuong V. Tran , Xinwei Yu , Zhichun Zhai

In this paper, we consider the Cauchy problem of the two-dimensional regularized incompressible magnetohydrodynamics equations. The main objective of this paper is to establish the global regularity of classical solutions of the…

Analysis of PDEs · Mathematics 2019-09-09 Zhuan Ye

As a continuation of the previous work [40], in this paper we focus on the Cauchy problem of the two-dimensional (2D) incompressible Boussinesq equations with fractional Laplacian dissipation. We give an elementary proof of the global…

Analysis of PDEs · Mathematics 2016-01-27 Zhuan Ye , Xiaojing Xu

In this paper, we investigate the global regularity of 2D generalized MHD equations, in which the dissipation term and magnetic diffusion term are $\nu(-\Delta)^\alpha u$ and $\eta (-\Delta)^\beta b$ respectively. Let $(u_{0}, b_{0})\in…

Analysis of PDEs · Mathematics 2015-11-25 Baoquan Yuan , Linna Bai

In this paper we study the global regularity of the following 2D (two-dimensional) generalized magnetohydrodynamic equations \begin{eqnarray*} \left\{\begin{array}{llll} u_t + u \cdot \nabla u & = & - \nabla p + b \cdot \nabla b - \nu…

Analysis of PDEs · Mathematics 2013-06-13 Quansen Jiu , Jiefeng Zhao

This paper establishes the global existence and regularity for a system of the two-dimensional (2D) magnetohydrodynamic (MHD) equations with only directional hyperresistivity. More precisely, the equation of $b_1$ (the horizontal component…

Analysis of PDEs · Mathematics 2017-09-27 Bo-Qing Dong , Jingna Li , Jiahong Wu

Whether or not classical solutions of the 2D incompressible MHD equations without full dissipation and magnetic diffusion can develop finite-time singularities is a difficult issue. A major result of this paper establishes the global…

Analysis of PDEs · Mathematics 2009-01-20 Chongsheng Cao , Jiahong Wu

This paper examines the global (in time) regularity of classical solutions to the 2D incompressible magnetohydrodynamics (MHD) equations with only magnetic diffusion. Here the magnetic diffusion is given by the fractional Laplacian operator…

Analysis of PDEs · Mathematics 2013-06-18 Chongsheng Cao , Jiahong Wu , Baoquan Yuan

This paper is concerned with the Cauchy problem of the two-dimensional MHD system with magnetic diffusion. It was proved that the MHD equations have a unique global strong solution around the equilibrium state $(0, e_1)$. Furthermore, the…

Analysis of PDEs · Mathematics 2020-09-10 Zhouyu Li , Pan Liu , Pengcheng Niu

In this paper we study the Cauchy problem for the two-dimensional (2D) incompressible Boussinesq equations with fractional Laplacian dissipation and thermal diffusion. Invoking the energy method and several commutator estimates, we get the…

Analysis of PDEs · Mathematics 2015-07-01 Zhuan Ye

The global well-posedness of the smooth solution to the three-dimensional (3D) incompressible micropolar equations is a difficult open problem. This paper focuses on the 3D incompressible micropolar equations with fractional dissipations $(…

Analysis of PDEs · Mathematics 2020-05-20 Dehua Wang , Jiahong Wu , Zhuan Ye

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

In recent years, the global existence of classical solutions to the Cauchy problem for 2D incompressible viscous MHD equations without magnetic diffusion has been proved in \cite{Ren,TZhang}, under the assumption that initial data is close…

Analysis of PDEs · Mathematics 2025-05-22 Shijin Ding , Ronghua Pan , Yi Zhu

This paper is concerned with the global regularity of the 2D (two-dimensional) generalized magnetohydrodynamic equations with only magnetic diffusion $\Lambda^{2\beta} b$. It is proved that when $\beta>1 $ there exists a unique global…

Analysis of PDEs · Mathematics 2015-06-17 Quansen Jiu , Jiefeng Zhao

This paper establishes the global regularity of classical solution to the 2D MHD system with only horizontal dissipation and horizontal magnetic diffusion in a strip domain $\mathbb{T}\times\mathbb{R}$ when the initial data is suitable…

Analysis of PDEs · Mathematics 2020-09-29 Marius Paicu , Ning Zhu

This paper aims at the global regularity problem concerning the 2D incompressible Boussinesq equations with general critical dissipation. The critical dissipation refers to $\alpha +\beta=1$ when $\Lambda^\alpha \equiv…

Analysis of PDEs · Mathematics 2014-10-14 Quansen Jiu , Changxing Miao , Jiahong Wu , Zhifei Zhang

In this paper, we study the global regularity of strong solution to the Cauchy problem of 3D incompressible Navier-Stokes equations with large data and non-zero force. We prove that the strong solution exists globally for $\nabla u\in…

Analysis of PDEs · Mathematics 2015-09-29 Abdelhafid Younsi

We consider a two-dimensional MHD model describing the evolution of viscous, compressible and electrically conducting fluids under the action of vertical magnetic field without resistivity. Existence of global weak solutions is established…

Analysis of PDEs · Mathematics 2019-07-02 Yang Li , Yongzhong Sun
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