Log-Poisson Cascade Description of Turbulent Velocity Gradient Statistics

Details Log-Poisson Cascade Description of Turbulent Velocity Gradient Statistics Log-Poisson Cascade Description of Turbulent Velocity Gradient Statistics

2009-06-15

arxiv.org/abs/0906.2723v1

Physics

Fluid Dynamics

Scientific paper

The Log-Poisson phenomenological description of the turbulent energy cascade is evoked to discuss high-order statistics of velocity derivatives and the mapping between their probability distribution functions at different Reynolds numbers. The striking confirmation of theoretical predictions suggests that numerical solutions of the flow, obtained at low/moderate Reynolds numbers can play an important quantitative role in the analysis of experimental high Reynolds number phenomena, where small scales fluctuations are in general inaccessible from direct numerical simulations.

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