Closure model for homogeneous isotropic turbulence in the Lagrangian specification of the flow field

研究成果: ジャーナルへの寄稿記事

抄録

This paper proposes a new two-point closure model that is compatible with the Kolmogorov -5/3 power law for homogeneous isotropic turbulence in an incompressible fluid using the Lagrangian specification of the flow field. A closed set of three equations was derived from the Navier-Stokes equation with no adjustable free parameters. The Kolmogorov constant and the skewness of the longitudinal velocity derivative were evaluated to be 1.779 and -0.49, respectively, using the proposed model. The bottleneck effect was also reproduced in the near-dissipation range.

元の言語英語
ページ(範囲)521-551
ページ数31
ジャーナルJournal of Fluid Mechanics
841
DOI
出版物ステータス出版済み - 4 25 2018

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homogeneous turbulence
isotropic turbulence
closures
specifications
Flow fields
flow distribution
Turbulence
Specifications
skewness
incompressible fluids
Navier-Stokes equation
Navier Stokes equations
dissipation
Derivatives
Fluids

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

これを引用

Closure model for homogeneous isotropic turbulence in the Lagrangian specification of the flow field. / Okamura, Makoto.

:: Journal of Fluid Mechanics, 巻 841, 25.04.2018, p. 521-551.

研究成果: ジャーナルへの寄稿記事

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