Journal of University of Science and Technology of China ›› 2015, Vol. 45 ›› Issue (9): 727-732.DOI: 10.3969/j.issn.0253-2778.2015.09.004

• Original Paper • Previous Articles    

Rapid time decay of weak solutions to the generalized Hall-magneto-hydrodynamics equations

TAO Qunqun, ZHANG Fei, DONG Boqing   

  1. School of Mathematical Sciences, Anhui University, Hefei 230039, China
  • Received:2015-05-19 Revised:2015-07-14 Accepted:2015-07-14 Online:2015-07-14 Published:2015-07-14
  • Contact: DONG Boqing
  • About author:TAO Qunqun, female, born in 1990, postgraduate. Research field: differential equations. E-mail: qunquntao123@163.com
  • Supported by:
    Supported by the NNSF of China (11271019).

Abstract: The rapid time decay for solutions to the generalized Hall-magneto-hydrodynamics equations was studied. By developing the classic Fourier splitting methods, the more rapid L2 decay rate of the weak solutions as (1+t)-74 was derived. The trick is mainly based on the even lower frequency effect of the nonlinear term.

Key words: generalized Hall-MHD equations, time decay, frequency estimation, incompressible

CLC Number: