Acta mathematica scientia,Series A ›› 2021, Vol. 41 ›› Issue (1): 100-125.

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Local well-Posedness for the Cauchy Problem of 2D Nonhomogeneous Incompressible and Non-Resistive MHD Equations with Vacuum

Mingtao Chen1,Wenhuo Su2,*(),Aibin Zang2   

  1. 1 School of Mathematics and Statistics, Shandong University, Shandong Weihai 264209
    2 Center of Applied Mathematics, Yichun University, Jiangxi Yichun 336000
  • Received:2019-12-12 Online:2021-02-26 Published:2021-01-29
  • Contact: Wenhuo Su E-mail:suwenhuo@jxycu.edu.cn
  • Supported by:
    the NSFC(11801495);the NSFC(11771382);the Science and Technology Project of Education Department in Jiangxi Province(GJJ201629);the NSF of Shandong Province(ZR2019MA050)

Abstract:

In this paper, we investigate the Cauchy problem of the nonhomogeneous incompressible and non-resistive MHD on ${\Bbb R}$2 with vacuum as far field density and prove that the 2D Cauchy problem has a unique local strong solution provided that the initial density and magnetic field decay not too slow at infinity. Furthermore, if the initial data satisfy some additional regularity and compatibility conditions, the strong solution becomes a classical one. Moreover, we also establish a blowup criterion which depends only on the Magnetic fields.

Key words: 2D non-resistive MHD equations, Vacuum, Classical solutions, Blowup criterion

CLC Number: 

  • O175.2
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