Modal time correlation functions for homogeneous isotropic turbulence in a projection operator method

Research output: Contribution to journalArticle

Abstract

Applying a projection operator method to homogeneous isotropic turbulence in the Lagrangian and Eulerian specifications of the flow field, we obtain a closure equation, which is called the similarity approximation (SA) equation, for the time correlation function. We compare its solutions with the time correlation function obtained from direct numerical simulation in the Eulerian specification and with that obtained from direct interaction approximation in the Lagrangian specification. Results of the comparison show that the SA equation can express time correlation for homogeneous isotropic turbulence in the Lagrangian and Eulerian specifications.

Original languageEnglish
Article number1.4919785
JournalPhysics of Fluids
Volume27
Issue number5
DOIs
Publication statusPublished - May 6 2015

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homogeneous turbulence
isotropic turbulence
specifications
projection
operators
approximation
direct numerical simulation
closures
flow distribution
interactions

All Science Journal Classification (ASJC) codes

  • Computational Mechanics
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

Cite this

Modal time correlation functions for homogeneous isotropic turbulence in a projection operator method. / Okamura, Makoto.

In: Physics of Fluids, Vol. 27, No. 5, 1.4919785, 06.05.2015.

Research output: Contribution to journalArticle

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