Is turbulent mixing a self convolution process ?

Details Is turbulent mixing a self convolution process ? Is turbulent mixing a self convolution process ?

2008-03-28

arxiv.org/abs/0803.4148v1

Physics

Classical Physics

4 pages

Scientific paper

10.1103/PhysRevLett.100.234506

Experimental results for the evolution of the probability distribution function (PDF) of a scalar mixed by a turbulence flow in a channel are presented. The sequence of PDF from an initial skewed distribution to a sharp Gaussian is found to be non universal. The route toward homogeneization depends on the ratio between the cross sections of the dye injector and the channel. In link with this observation, advantages, shortcomings and applicability of models for the PDF evolution based on a self-convolution mechanisms are discussed.

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