Intermittency and exponent field dynamics in developed turbulence

Hirokazu Fujisaka; Yasuya Nakayama

doi:10.1103/PhysRevE.67.026305

Intermittency and exponent field dynamics in developed turbulence

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Abstract

Spatiotemporal dynamics of intermittency in association with coarse-grained energy-dissipation rate fluctuations is discussed. This is done first by phenomenologically constructing the probability density for exponent field fluctuations that is introduced to characterize the energy-dissipation rate field, and then by proposing the Langevin dynamics derived with the projection-operator method on the basis of the Navier-Stokes equation. With a Gaussian approximation for exponent fluctuations, spatiotemporal correlation functions for coarse-grained energy-dissipation rate fluctuations are explicitly obtained.

Original language	English
Number of pages	1
Journal	Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
Volume	67
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevE.67.026305
Publication status	Published - Jan 1 2003
Externally published	Yes

All Science Journal Classification (ASJC) codes

Statistical and Nonlinear Physics
Mathematical Physics
Condensed Matter Physics
Physics and Astronomy(all)

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10.1103/PhysRevE.67.026305

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Intermittency and exponent field dynamics in developed turbulence

Abstract

All Science Journal Classification (ASJC) codes

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