STATISTICAL MODEL FOR THE CONDITIONAL DISSIPATION RATE AND SURFACE DENSITY FUNCTION OF SCALAR TURBULENT FLUCTUATION INTENSITY

Sosinovich, Valery A.; Babenko, Valery A.; Zhukova, Julia V.

Turbulence and Shear Flow Phenomena -1 First International Symposium

ISBN Imprimer: 1-56700-135-1

STATISTICAL MODEL FOR THE CONDITIONAL DISSIPATION RATE AND SURFACE DENSITY FUNCTION OF SCALAR TURBULENT FLUCTUATION INTENSITY

Valery A. Sosinovich Luikov Heat & Mass Transfer Institute National Academy of Sciences of Belarus 15 P. Brovka Str., Minsk, Belarus

Valery A. Babenko A. V. Luikov Heat and Mass Transfer Institute, National Academy of Sciences of Belarus, Minsk, Belarus

Julia V. Zhukova A.V. Luikov Heat and Mass Transfer Institute of NAS of Belarus, Minsk, Belarus

Résumé

A closed system of the equations for one-point probability density function (PDF) f,(Γ), surface density function (SDF) Σ_t,(Γ), and a conditional scalar dissipation rate (CSDR) Χ_t (Γ) have been derived and solved numerically. These equations were derived through the closed equation for the joint probability density function (JPDF) of a scalar and the value of its gradient, P_t (W, Γ) .

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