On the theory of turbulence in planetary atmospheres. The numerical simulation of structural parameters.

Details On the theory of turbulence in planetary atmospheres. The numerical simulation of structural parameters. On the theory of turbulence in planetary atmospheres. The numerical simulation of structural parameters.

Apr 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995avest..29..133k&link_type=abstract

Astronomicheskii Vestnik, Tom 29, No. 2, p. 133 - 154

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Planetary Atmospheres: Turbulence, Planetary Atmospheres: Numerical Simulations, Earth Atmosphere: Models, Earth Atmosphere: Turbulence

Scientific paper

The turbulent flow of an N-component mixture of chemically active gases is considered in the gravitational field. A closed system of averaged hydrodynamic equations and model equations of transport for single-point second moments of pulsating structural parameters is obtained with mechanics of continua. The system is a base for semiempirical theories of turbulence in the upper planetary atmosphere, which take into account the multicomponency of a medium, stream compressibility, heat and mass transport, and chemical reactions. An averaging procedure of source terms of producing mass in chemical reactions is presented. In a form suitable for aeronomical applications, determining relations for turbulent streams of diffusion and heat and Reynolds stress tensor are drawn. Results for a uniform turbulent continuum are generalized for a multicomponet medium. For the stratified atmosphere, analytical formulas for calculations of turbulent transport coefficients (tensors) of the determining equations are obtained. As a demonstration of the method developed, a numerical computation of coefficients of turbulent viscosity and temperature conductivity of the Earth's turbosphere is presented.

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