A Unified Formulation Of The Spectra Of Temperature-Fluctuations In Isotropic Turbulence

    Authors

    B. K. Shivamoggi;L. C. Andrews

    Comments

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    Abbreviated Journal Title

    J. Phys. A-Math. Gen.

    Keywords

    DISSIPATION; VELOCITY; SCALAR; LAYER; FIELD; Physics, Multidisciplinary; Physics, Mathematical

    Abstract

    This paper gives a unified formulation of the spectra of temperature fluctuations in isotropic turbulence in all subregimes of wavenumbers. This is accomplished by making a systematic analysis of the effects of the fluid convection, viscosity and thermal diffusivity on the temperature spectrum. A generalized Heisenberg-von Weizsacker type model is used to describe the statistical interaction of the Fourier components of velocity and temperature. The latter is described in terms of kinetic energy and temperature variance transfer coefficients given by moments of the two spectra for large-wavenumber modes.

    Journal Title

    Journal of Physics a-Mathematical and General

    Volume

    24

    Issue/Number

    20

    Publication Date

    1-1-1991

    Document Type

    Article

    Language

    English

    First Page

    4721

    Last Page

    4729

    WOS Identifier

    WOS:A1991GM25000007

    ISSN

    0305-4470

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