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First Symposium on Turbulence and Shear Flow Phenomena
September, 12-15, 1999, Doubletree Resort, Santa Barbara, California, USA

DOI: 10.1615/TSFP1

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

pages 327-332
DOI: 10.1615/TSFP1.540
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RESUMO

A closed system of the equations for one-point probability density function (PDF) f,(Γ), surface density function (SDF) Σt,(Γ), and a conditional scalar dissipation rate (CSDR) Χt (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, Pt (W, Γ) .

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