Improving the Vector Basis Neural Network for RANS Equations Using Separate Trainings

Davide Oberto

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arXiv · 2409.17721

Improving the Vector Basis Neural Network for RANS Equations Using Separate Trainings

Davide Oberto

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Abstract

We present a new data-driven turbulence model for Reynolds-averaged Navier-Stokes equations called $\nu_t$-Vector Basis Neural Network. This new model, grounded on the already existing Vector Basis Neural Network, predicts separately the turbulent viscosity $\nu_t$ and the contribution of the Reynolds force vector that is not already accounted in $\nu_t$. Numerical experiments on the flow in a Square Duct show the better accuracy of the new model compared to the reference one.

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Davide Oberto. 2024-09-26. Improving the Vector Basis Neural Network for RANS Equations Using Separate Trainings. https://arxiv.org/abs/2409.17721

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