Adiabatic isotropic turbulence in compressible fluids

V.A. Pais

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Abstract

We present the preliminary results about the effects of compressibility (modified through the isoentropic parameter γ) on the main quantities characterizing the isotropic turbulence in ideal gases. The numerical simulations performed for this study were done by using spectral methods, in an adiabatic regime and maintaining the kinetic energy at a fixed value. In the range of values for γ, Mach and Reynolds numbers tested here, no significant differences have been found in the spectra of the kinetic and internal energies and in other statistical quantities. Once the stationary regime is reached, an "inertial subrange" k(-5/3)attempts to appear for low wave numbers. © Società Italiana di Fisica.
Original languageEnglish
Pages (from-to)1819 - 1838
Number of pages20
JournalNuovo Cimento della Societa Italiana di Fisica D - Condensed Matter, Atomic, Molecular and Chemical Physics, Biophysics
Volume19
Issue number12
Publication statusPublished - 1997
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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