Modeling the structure functions in linearly forced isotropic turbulence

Evangelos Akylas, Elias Gravanis, Marios Fyrillas, Damian I. Rouson, Stavros C. Kassinos

Research output: Contribution to conferencePaperpeer-review

Abstract

The physics of the linear forcing of isotropic turbulence, allows for some useful estimates of the characteristic length scales of the turbulence produced during the statistically stationary phase. With such estimates we could practically define uniquely the stationary statistics by means of the boxsize of the simulation, the linear forcing parameter and the viscosity of each case. We use such estimations in the Karman-Howarth equation and we solve it in terms of the second and third order structure functions using a generalized Oberlack-Peters closure scheme. The resulting forms and the respective spectra are in very good agreement with experimental and DNS data.

Original languageEnglish
Publication statusPublished - Jan 1 2011
Event7th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2011 - Ottawa, Canada
Duration: Jul 28 2011Jul 31 2011

Other

Other7th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2011
CountryCanada
CityOttawa
Period7/28/117/31/11

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes

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