Abstract
In the framework of the LES approach, the simple stochastic model of turbulent cascade with intermittency is introduced in order to represent the interaction between a solid particle and turbulence at sub-grid scales. The computation of the Lagrangian statistics of a light particle in homogeneous stationary turbulence reproduced the results of measurements: (i) for the velocity statistics, the numerical results were in agreement with classical Kolmogorov 1941 phenomenology; (ii) the computation of the velocity increment at different time lags revealed, however, the strong intermittency.
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