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Predicting the Propagation of Acoustic Waves using Deep Convolutional Neural Networks

Alguacil, Antonio and Bauerheim, Michaël and Jacob, Marc C. and Moreau, Stéphane Predicting the Propagation of Acoustic Waves using Deep Convolutional Neural Networks. (2020) In: AIAA AVIATION FORUM, 15 June 2020 - 19 June 2020 (Virtual Event, United States).

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Official URL: https://doi.org/10.2514/6.2020-2513

Abstract

A novel approach for numerically propagating acoustic waves in two-dimensional quiescent media has been developed through a fully convolutional multi-scale neural network. This data-driven method managed to produce accurate results for long simulation times with a database of Lattice Boltzmann temporal simulations of propagating Gaussian Pulses, even in the case of initial conditions unseen during training time, such as the plane wave configuration or the two initial Gaussian pulses of opposed amplitudes. Two different choices of optimization objectives are compared, resulting in an improved prediction accuracy when adding the spatial gradient difference error to the traditional mean squared error loss function. Further accuracy gains are observed when performing an a posteriori correction on the neural network prediction based on the conservation of acoustic energy, indicating the benefit of including physical information in data-driven methods.

Item Type:Conference or Workshop Item (Paper)
HAL Id:hal-02923499
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
Other partners > Ecole Centrale de Lyon (FRANCE)
Other partners > Université de Sherbrooke (CANADA)
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Deposited On:27 Aug 2020 08:54

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