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Physics-informed neural networks for data-driven simulation: Advantages, limitations, and opportunities

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  • Fernández de la Mata, Félix
  • Gijón, Alfonso
  • Molina-Solana, Miguel
  • Gómez-Romero, Juan

Abstract

The last decade has seen a rise in the number and variety of techniques available for data-driven simulation of physical phenomena. One of the most promising approaches is Physics-Informed Neural Networks (PINNs), which can combine both data, obtained from sensors or numerical solvers, and physics knowledge, expressed as partial differential equations. In this work, we investigated the suitability of PINNs to replace current available numerical methods for physics simulations. Although the PINN approach is general and independent of the complexity of the underlying physics equations, a selection of typical heat transfer and fluid dynamics problems was proposed and multiple PINNs were comprehensibly trained and tested to solve them. When PINNs were used as learned simulators, the outcome of our experiments was not entirely satisfactory as not enough accuracy was achieved even though optimal configurations and long training times were used. The main cause for this limitation was found to be the lack of adequate activation functions and specialized architectures, since they proved to have a notable impact on the final accuracy of each model. In turn, PINN architectures showed an accurate behavior when used for parameter inference of partial differential equations from data.

Suggested Citation

  • Fernández de la Mata, Félix & Gijón, Alfonso & Molina-Solana, Miguel & Gómez-Romero, Juan, 2023. "Physics-informed neural networks for data-driven simulation: Advantages, limitations, and opportunities," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 610(C).
  • Handle: RePEc:eee:phsmap:v:610:y:2023:i:c:s0378437122009736
    DOI: 10.1016/j.physa.2022.128415
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    References listed on IDEAS

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    1. Zhao Chen & Yang Liu & Hao Sun, 2021. "Physics-informed learning of governing equations from scarce data," Nature Communications, Nature, vol. 12(1), pages 1-13, December.
    2. Bryan C. Daniels & Ilya Nemenman, 2015. "Automated adaptive inference of phenomenological dynamical models," Nature Communications, Nature, vol. 6(1), pages 1-8, November.
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