Statistics of pressure and of pressure-velocity correlations in isotropic turbulence

L. Biferale, P. Gualtieri, F. Toschi

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4 Citations (Scopus)

Abstract

Some pressure and pressure-velocity correlations in a direct numerical simulations of a three-dimensional turbulent flow at moderate Reynolds numbers have been analyzed. We have identified a set of pressure-velocity correlations which possess a good scaling behavior. Such a class of pressure-velocity correlations is determined by looking at the energy-balance across any sub-volume of the flow. According to our analysis, pressure scaling is determined by the dimensional assumption that pressure behaves as a "velocity squared," unless finite-Reynolds effects are overwhelming. The SO(3) decompositions of pressure structure functions has also been applied in order to investigate anisotropic effects on the pressure scaling.
Original languageUndefined
Pages (from-to)1836-1842
Number of pages7
JournalPhysics of fluids
Volume12
Issue number7
DOIs
Publication statusPublished - 2000

Keywords

  • IR-24814
  • METIS-129615

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