Research reports

On the vanishing viscosity limit of statistical solutions of the incompressible Navier-Stokes equations

by U. Fjordholm and S. Mishra and F. Weber

(Report number 2021-34)

Abstract
We study statistical solutions of the incompressible Navier--Stokes equation and their vanishing viscosity limit. We show that a formulation using correlation measures, which are probability measures accounting for spatial correlations, and moment equations is equivalent to statistical solutions in the Foiac{s}--Prodi sense. Under the assumption of weak scaling, a weaker version of Kolmogorov's self-similarity at small scales hypothesis that allows for intermittency corrections, we show that the limit is a statistical solution of the incompressible Euler equations. To pass to the limit, we derive a K'arm'an--Howarth--Monin relation for statistical solutions and combine it with the weak scaling assumption and a compactness theorem for correlation measures.

Keywords: Statistical Solutions, Vanishing Viscosity, Euler equations, Navier-Stokes equations

BibTeX
@Techreport{FMW21_976,
  author = {U. Fjordholm and S. Mishra and F. Weber},
  title = {On the vanishing viscosity limit of statistical solutions of the incompressible Navier-Stokes equations},
  institution = {Seminar for Applied Mathematics, ETH Z{\"u}rich},
  number = {2021-34},
  address = {Switzerland},
  url = {https://www.sam.math.ethz.ch/sam_reports/reports_final/reports2021/2021-34.pdf },
  year = {2021}
}

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