Intermittency and non-gaussian statistics in turbulence
- 1 October 1991
- journal article
- Published by IOP Publishing in Fluid Dynamics Research
- Vol. 8 (1-4) , 143-158
- https://doi.org/10.1016/0169-5983(91)90039-l
Abstract
Intermittency effects in turbulence are discussed from a dynamical point of view. A two-fluid model is developed to describe quantitatively the non-gaussian statistics of turbulence at small scales. With a self-similarity argument, the model gives rise to the entire set of inertial range scaling exponents for normalized velocity structure functions. The results are in excellent agreement with experimental and numerical measurements. The model suggests a physical mechanism of intermittency, namely the self-interaction of turbulence structures.Keywords
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