By Gregory Eyink and Damien Benveniste

We solve an inverse problem for fluid particle pair-statistics: we show that a time sequence of probability density functions (PDF's) of separations can be exactly reproduced by solving the diffusion equation with a suitable time-dependent diffusivity. The diffusivity tensor is given by a time-integral of a conditional Lagrangian velocity structure-function,... Show more

June 27, 2013

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The Diffusion Approximation in Turbulent Two-Particle Dispersion

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