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In this paper we consider the Cauchy problem for neo-Hookean incompressible elasticity in spatial dimension $d \geq 2$. We are here interested primarily in the low regularity case, $s \le s_{crit}=d/2+1$. For $d = 2, 3$, we prove existence…

Analysis of PDEs · Mathematics 2021-11-09 Lars Andersson , Lev Kapitanski

The Cauchy problem for non-isentropic compressible Navier-Stokes/Allen-Cahn system with degenerate heat-conductivity $\kappa(\theta)=\tilde{\kappa}\theta^\beta$ in 1-d is discussed in this paper. This system is widely used to describe the…

Analysis of PDEs · Mathematics 2025-06-10 Yazhou Chen , Qiaolin He , Bin Huang , Xiaoding Shi

We study vortex patches for the 2D incompressible Euler equations. Prior works on this problem take the support of the vorticity (i.e., the vortex patch) to be a bounded region. We instead consider the horizontally periodic setting. This…

Analysis of PDEs · Mathematics 2022-09-30 David M. Ambrose , Fazel Hadadifard , James P. Kelliher

We generalize a recently introduced formulation of relativistic spinful and vortical fluid to relativistic magnetohydrodynamics (MHD). We refer to it as the "Spinful-Vortical MHD" (SVMHD). The aim is to scrutinize the interplay between the…

Nuclear Theory · Physics 2023-10-13 M. Kiamari , N. Sadooghi , M. Sedighi Jafari

We present an algorithm for simulating the equations of ideal magnetohydrodynamics and other systems of differential equations on an unstructured set of points represented by sample particles. The particles move with the fluid, so the time…

Instrumentation and Methods for Astrophysics · Physics 2015-05-30 Colin P. McNally , Jason L. Maron , Mordecai-Mark Mac Low

We consider the equations of relativistic magnetohydrodynamics (RMHD) in the case of special relativity. For the fluid rest frame a nonconservative reformulation of the RMHD equations gives a symmetric system for the vector of primitive…

Analysis of PDEs · Mathematics 2015-06-04 Heinrich Freistühler , Yuri Trakhinin

We consider the classical dynamics of a particle in a $d=2,3$-dimensional space-periodic potential under the influence of time-periodic external fields with zero mean. We perform a general time-space symmetry analysis and identify…

Statistical Mechanics · Physics 2009-07-02 S. Denisov , Y. Zolotaryuk , S. Flach , O. Yevtushenko

In this paper, we are concerned with the motion of electrically conducting fluid governed by the two-dimensional non-isentropic viscous compressible MHD system on the half plane, with no-slip condition for velocity field, perfect conducting…

Analysis of PDEs · Mathematics 2018-03-20 Huang Yongting , Liu Cheng-Jie , Yang Tong

This paper investigates the Cauchy problem for the barotropic compressible Navier-Stokes equations in $\mathbb{R}^2$ with the constant state as far field, which may be vacuum or non-vacuum. Under the assumption of a sufficiently large bulk…

Analysis of PDEs · Mathematics 2026-01-27 Qinghao Lei , Chengfeng Xiong

In this paper the problem of strong solvability of the incompressible Navier-Stokes equations (INSE) is revisited, with the goal of determining the minimal assumptions for the validity of a local existence and uniqueness theorem for the…

Mathematical Physics · Physics 2008-10-01 M. Tessarotto , C. Cremaschini

The nonconforming Morley-type virtual element method for the incompressible Navier-Stokes equations formulated in terms of the stream-function on simply connected polygonal domains (not necessarily convex) is designed. A rigorous analysis…

Numerical Analysis · Mathematics 2022-12-06 D. Adak , D. Mora , A. Silgado

We study the Cauchy problem for the three-dimensional isentropic compressible ideal (inviscid and non-resistive) magnetohydrodynamic equations with velocity damping on the periodic torus $\mathbb{T}^3$. The system admits a steady…

Analysis of PDEs · Mathematics 2026-05-07 Liening Qiao , Jiahong Wu , Fuyi Xu , Xiaoping Zhai

The Hamiltonian structures of the incompressible ideal fluid, including entropy advection, and magnetohydrodynamics are investigated by making use of Dirac's theory of constrained Hamiltonian systems. A Dirac bracket for these systems is…

Plasma Physics · Physics 2015-06-03 Cristel Chandre , Philip J. Morrison , Emanuele Tassi

We investigate the existence and uniqueness issues of the 3D incompressible Hall-magnetohydrodynamic system supplemented with initial velocity $u_0$ and magnetic field $B_0$ in critical regularity spaces.In the case where $u_0,$ $B_0$ and…

Analysis of PDEs · Mathematics 2020-11-20 Raphaël Danchin , Jin Tan

We are concerned with supersonic vortex sheets for the Euler equations of compressible inviscid fluids in two space dimensions. For the problem with constant coefficients we derive an evolution equation for the discontinuity front of the…

Analysis of PDEs · Mathematics 2018-06-19 Alessandro Morando , Paolo Secchi , Paola Trebeschi

Magneto-hydrodynamics is one of the foremost models in plasma physics with applications in inertial confinement fusion, astrophysics and elsewhere. Advanced numerical methods are needed to get an insight into the complex physical phenomena.…

Computational Physics · Physics 2022-03-29 Jan Nikl , Milan Kuchařík , Stefan Weber

In this paper, we reprove the principal result of a paper by H-O Kreiss and Jens Lorenz from a different approach than the method proposed in their paper. More precisely, we consider the Cauchy problem for the incompressible Navier-Stokes…

Analysis of PDEs · Mathematics 2019-07-09 Santosh Pathak

This article is concerned with the global exact controllability for ideal incompressible magnetohydrodynamics in a rectangular domain where the controls are situated in both vertical walls. First, global exact controllability via boundary…

Analysis of PDEs · Mathematics 2025-11-07 Manuel Rissel , Ya-Guang Wang

By observing a new relation between the magnetic pressure and the hydrodynamic pressure, global existence of classical solution to the full perfect MHD equations with large data is established, in particular including the case when all the…

Analysis of PDEs · Mathematics 2013-12-03 Xulong Qin , Tong Yang , Zheng-an Yao , Wenshu Zhou

This paper concerns the Cauchy problem of the non-baratropic non-resistive magnetohydrodynamic (MHD) equations with zero heat conduction on the whole two-dimensional (2D) space with vacuum as far field density. By delicate weighted energy…

Analysis of PDEs · Mathematics 2018-01-24 Xin Zhong