Acta mathematica scientia,Series A ›› 2021, Vol. 41 ›› Issue (2): 336-344.

Previous Articles     Next Articles

Degenerate Regularity of Trajectory Statistical Solutions for the 3D Incompressible Navier-Stokes Equations

Mingyue Xu1(),Caidi Zhao1,*(),Caraballo Tomás2()   

  1. 1 Department of Mathematics, Wenzhou University, Zhejiang Wenzhou 325035
    2 Facultad de Mathmáticas, Universidad de Sevilla, Departmento de Ecuaciones Diferenciales y Análisis Numérico, 41012-Sevilla, Spain
  • Received:2020-02-26 Online:2021-04-26 Published:2021-04-29
  • Contact: Caidi Zhao E-mail:xumingyue19@foxmail.com;zhaocaidi2013@163.com;caraball@us.es
  • Supported by:
    the NSFC(11971356);the NSF of Zhejiang Province(LY17A010011)

Abstract:

In this article, the authors prove that if the (generalized) 3D Grashof number of the 3D autonomous incompressible Navier-Stokes equations is less than 2.057, then its weak trajectory statistical solutions possess (partial) degenerate regularity in the sense that they are supported by a set in which the weak solutions are in fact (partially) strong solutions. Also, they reveal that if the 3D Grashof number is less than 2.057, then the 3D incompressible Navier-Stokes equations possess only one complete and bounded strong solution which not only forward attracts but also pullback attracts its trajectories.

Key words: Trajectory statistical solution, Degenerate regularity, 3D incompressible Navier-Stokes equations, Trajectory attractor, Grashof number

CLC Number: 

  • O.175.8
Trendmd