Papers › Robust deep learning for emulating turbulent viscosities

Robust deep learning for emulating turbulent viscosities

23 Jul 2021arXiv:2107.11235links table onlyarchive 2025-07-28

Aakash Patil, Jonathan Viquerat, George El Haber, Elie Hachem

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From the simplest models to complex deep neural networks, modeling turbulence with machine learning techniques still offers multiple challenges. In this context, the present contribution proposes a robust strategy using patch-based training to learn turbulent viscosity from flow velocities, and demonstrates its efficient use on the Spallart-Allmaras turbulence model. Training datasets are generated for flow past two-dimensional (2D) obstacles at high Reynolds numbers and used to train an auto-encoder type convolutional neural network with local patch inputs. Compared to a standard training technique, patch-based learning not only yields increased accuracy but also reduces the computational cost required for training.

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jviquerat/cnn_spallart_allmaras officialmentioned in papermentioned on GitHubtf report
aakash30jan/RobustDL_Turbulence mentioned on GitHubtf report

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