GLOBAL UNIQUE SOLUTIONS FOR THE INCOMPRESSIBLE MHD EQUATIONS WITH VARIABLE DENSITY AND ELECTRICAL CONDUCTIVITY*

  • Xueli KE
Expand
  • 1. School of Mathematics and Computational Science, Xiangtan University, Xiangtan 411105, China;
    2. School of Mathematics and Information Science, Henan Polytechnic University, Jiaozuo 454000, China
Xueli KE, E-mail,: kexueli123@126.com

Received date: 2023-01-08

  Revised date: 2024-04-30

  Online published: 2024-10-22

Supported by

National Natural Science Foundation of China (12371211, 12126359) and the postgraduate Scientific Research Innovation Project of Hunan Province (XDCX2022Y054, CX20220541).

Abstract

We study the global unique solutions to the 2-D inhomogeneous incompressible MHD equations, with the initial data $(u_{0},B_{0})$ being located in the critical Besov space $\dot{B}_{p,1}^{-1+\frac{2}{p}}(\mathbb{R}^{2}) \,\, (1<p<2)$ and the initial density $\rho_{0}$ being close to a positive constant. By using weighted global estimates, maximal regularity estimates in the Lorentz space for the Stokes system, and the Lagrangian approach, we show that the 2-D MHD equations have a unique global solution.

Cite this article

Xueli KE . GLOBAL UNIQUE SOLUTIONS FOR THE INCOMPRESSIBLE MHD EQUATIONS WITH VARIABLE DENSITY AND ELECTRICAL CONDUCTIVITY*[J]. Acta mathematica scientia, Series B, 2024 , 44(5) : 1747 -1765 . DOI: 10.1007/s10473-024-0507-2

References

[1] Abidi H, Hmidi T. Résultats d'existence dans des espaces critiques pour le la MHD inhomogène. Ann Math Blaise Pascal, 2007, 14: 103-148
[2] Abidi H, Gui G. Global well-posedness for the 2-D inhomogeneous incompressible Navier-Stokers system with large initial data in critical spaces. Arch Ration Mech Anal, 2021, 242: 1533-1570
[3] Abidi H, Paicu M. Global existence for the magnetohydodynamic system in critical spaces. Proc Roy Soc Edinburgh Sect A, 2008, 138: 447-476
[4] Bahouri H, Chemin J, Danchin R.Fourier Analysis and Nonlinear Partial Differential Equations. A Serise of Comprehensive Studies in Mathematics. Berlin Heidelberg: Springer-Verlag, 2011
[5] Bie Q, Wang Q, Yao Z. Global well-posedness of the 3D incompressible MHD equations with variable density. Nonlinear Anal Real World Appl, 2019, 47: 85-105
[6] Chemin J. Perfect Incompressible Fluids.Oxford Lecture Ser Math Appl, vol 14. New York: The Clarendon Press, Oxford Univ Press, 1998
[7] Danchin R.On the well-posedness of the incompressible density-dependent Euler equations in the $L^p$ framework. J Differential Equations, 2010, 248: 2130-2170
[8] Danchin R, Bogusław P, Tolksdorf P. Lorentz spaces in action on pressureless systems arising from models of collective behavior. J Evol Equ, 2021, 21: 3103-3127
[9] Danchin R, Mucha P. A lagrangian approach for the incompressible Navier-Stokes equations with variable density. Comm Pure Appl Math, 2012, 65: 1458-1480
[10] Danchin R, Mucha P. Incompressible flows with piecewise constant density. Arch Ration Mech Anal, 2013, 207: 991-1023
[11] Danchin R, Mucha P.Critical Functional Framework and Maximal Regularity in Action on Systems of Incompressible Flows. Méoires de la Société Mathématique de France, vol 143. Paris: Soc Math France, 2015
[12] Danchin R, Wang S. Global unique solutions for the inhomogeneous Navier-Stokes equation with only bounded density, in critical regularity spaces. Comm Math Phys, 2023, 399: 1647-1688
[13] Duvaut G, Lions J. Inéquations en thermoélasticité et magnétohydrodynamique. Arch Rational Mech Anal, 1972, 46: 241-279
[14] Gerbeau J, Le Bris C. Existence of solution for a density-dependent magnetohydrodynamic equation. Adv Differential Equations, 1997, 2: 427-452
[15] Grafakos L. Classical Fourier Analysis.Graduate Texts in Mathematics. Heidelberg: Springer, 2014
[16] Gui G. Global well-posedness of the two-dimensional incompressible magnetohydrodynamics system with variable density and electrical conductivity. J Funct Anal, 2014, 267: 1488-1539
[17] Huang J, Paicu M. Decay estimates of global solutions to 2D incompressible inhomogeneous Navier-Stokes system with variable viscosity. Discrete Contin Dyn Syst, 2014, 34: 4647-4669
[18] Huang J, Paicu M, Zhang P. Global solutions to 2-D inhomogeneous Navier-Stokes system with general velocity. J Math Pures Appl, 2013, 100: 806-831
[19] Ke X, Yuan B, Xiao Y. A Stability problem for the 3D magnetohydrodynamic equations near equilibrium. Acta Math Sci, 2021, 41B: 1107-1118
[20] Lions P.Mathematical Topics in Fluid Mechanics. Vol 1. Incompressible Models. New York: Oxford University Press, 1996
[21] Majda A, Bertozzi A.Vorticity and Incompressible Flow. Cambridge: Cambridge University Press, 2002
[22] Paicu M, Zhang P. Striated regularity of 2-D inhomogeneous incompressible Navier-Stokes system with variable viscosity. Comm Math Phys, 2020, 376: 385-439
[23] Paicu M, Zhang P, Zhang Z. Global unique solvability of inhomogeneous Navier-Stokes equations with bounded density. Comm Partial Differential Equations, 2013, 38: 1208-1234
[24] Zhai X, Yin Z. Global well-posedness for the 3D incompressible inhomogeneous Navier-Stokes equations and MHD equations. J Differential Equations, 2017, 262: 1359-1412
Options
Outlines

/