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Neural network based generation of 1-dimensional stochastic fields with turbulent velocity statistics

11/21/2022

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by Carlos Granero-Belinchon, et al.

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IMT Atlantique

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We define and study a fully-convolutional neural network stochastic model, NN-Turb, which generates 1-dimensional fields with turbulent velocity statistics. Thus, the generated process satisfies the Kolmogorov 2/3 law for second order structure function. It also presents negative skewness across scales (i.e. Kolmogorov 4/5 law) and exhibits intermittency. Furthermore, our model is never in contact with turbulent data and only needs the desired statistical behavior of the structure functions across scales for training.

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