Probability Density Function Of A Passive Scalar Gradient
Fractal and multi-fractal models are used to derive the probability density function (PDF) for the gradient of a passive scalar diffusing in a random velocity field. Although the PDF is symmetrical, it is non-Gaussian and compares reasonably well with the measured PDF. In the process, we also provide a unified systematic framework to derive the appropriate scalar microscales for the following regimes: inertial-diffusive range; viscous-convective range; viscous-diffusive range. (C) 2000 Elsevier Science B.V.
Physics Letters, Section A: General, Atomic and Solid State Physics
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Shivamoggi, B. K. and Antonia, R. A., "Probability Density Function Of A Passive Scalar Gradient" (2000). Scopus Export 2000s. 782.