English

Hausdorff dimension of concentration for isentropic compressible Navier-Stokes equations

Analysis of PDEs 2018-07-03 v2

Abstract

The concentration phenomenon of the kinetic energy, ρu2\rho|\mathbf{u}|^2, associated to isentropic compressible Navier-Stokes equations, is addressed in Rn\mathbb{R}^n with n=2,3n=2,3 and the adiabatic constant γ[1,n2]\gamma\in[1,\frac{n}{2}]. Except a space-time set with Hausdorff dimension less than or equal to Γ(n)+1\Gamma(n)+1 with Γ(n)=max{γ(n),nnγγ(n)+1}andγ(n)=n(n1)nγnγ, \Gamma(n)=\max\left\{\gamma(n), n-\frac{n\gamma}{\gamma(n)+1}\right\}\quad\textrm{and}\quad\gamma(n)=\frac{n(n-1)-n\gamma}{n-\gamma}, no concentration phenomenon occurs.

Keywords

Cite

@article{arxiv.1606.06825,
  title  = {Hausdorff dimension of concentration for isentropic compressible Navier-Stokes equations},
  author = {Xianpeng Hu},
  journal= {arXiv preprint arXiv:1606.06825},
  year   = {2018}
}