The influence of intermittency on turbulent diffusion is expressed in terms of the statistics of the dissipation field. The high‐order moments of relative diffusion are obtained by using the concept of scale similarity of the breakdown coefficients (bdc). The method of bdc is useful for obtaining new models and general results, which then can be expressed in terms of multifractals. In particular, the concavity and other properties of spectral codimension are proved. Special attention is paid to the logarithmically periodic modulations. The parametrization of small‐scale intermittent turbulence, which can be used for large‐eddy simulation, is presented. The effect of molecular viscosity is taken into account in the spirit of the renorm group, but without spectral series, ε expansion, and fictitious random forces.
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May 1990
This content was originally published in
Physics of Fluids A: Fluid Dynamics
Research Article|
May 01 1990
The effects of intermittency on statistical characteristics of turbulence and scale similarity of breakdown coefficients
Phys. Fluids 2, 814–820 (1990)
Article history
Received:
July 25 1989
Accepted:
January 02 1990
Citation
E. A. Novikov; The effects of intermittency on statistical characteristics of turbulence and scale similarity of breakdown coefficients. Phys. Fluids 1 May 1990; 2 (5): 814–820. https://doi.org/10.1063/1.857629
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