中文

轴对称Navier-Stokes方程的一个Liouville定理

偏微分方程分析 2010-11-30 v2

摘要

v(x,t)=vrer+vθeθ+vzezv(x, t)= v^r e_r + v^\theta e_\theta + v^z e_z为三维不可压缩轴对称Navier-Stokes方程的解。记b=vrer+vzezb = v^r e_r + v^z e_z为径向-轴向向量场。在关于bb的一般标度不变条件下,我们证明了量Γ=rvθ\Gamma = r v^\thetar=0r = 0t=0t = 0处是Hölder连续的。作为应用,我们部分证明了Koch-Nadirashvili-Seregin-Sverak在\cite{KNSS}和Seregin-Sverak在\cite{SS}中关于Liouville性质的一个猜想。作为另一个应用,我们证明了如果bL([0,T],BMO1)b \in L^\infty([0, T], BMO^{-1}),则vv是正则的。这为Koch和Tataru在\cite{KochTataru}中提出的关于轴对称情形下Navier-Stokes方程唯一性和正则性的一个开放问题提供了答案。

关键词

引用

@article{arxiv.1011.5066,
  title  = {A Liouville Theorem for the Axially-symmetric Navier-Stokes Equations},
  author = {Zhen Lei and Qi S. Zhang},
  journal= {arXiv preprint arXiv:1011.5066},
  year   = {2010}
}

备注

1. We give a partial proof of a conjecture on Liouville property by Koch-Nadirashvili-Seregin-Sverak in \cite{KNSS} and Seregin-Sverak in \cite{SS}. We also solved an open question raised by Koch and Tataru in \cite{KochTataru} in the axi-symmetric case. 2. Comparing with the previous version, one reference is added