Mean-field and fluctuation analysis of a forced turbulence simulated by the lattice boltzmann method

Wataru Sakikawa, Osamu Narikiyo

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

On the basis of the lattice Boltzmann method for the Navier-Stokes equation, we have done a numerical experiment of a forced turbulence in real space and time. Our new findings are summarized into two points. Firstly, in the analysis of the mean-field behavior of the velocity field using the exit-time statistics, we have verified Kolmogorov's scaling and Taylor's hypothesis at the same time. Secondly, in the analysis of the intermittent velocity fluctuations using a non-equilibrium probability distribution function and the wavelet denoising, we have clarified that the coherent vortices sustain the power-law velocity correlation in the non-equilibrium state.

Original languageEnglish
Pages (from-to)583-596
Number of pages14
JournalModern Physics Letters B
Volume18
Issue number12-13
DOIs
Publication statusPublished - May 30 2004

All Science Journal Classification (ASJC) codes

  • Statistical and Nonlinear Physics
  • Condensed Matter Physics

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