Author:
Gin Craig R.,Shea Daniel E.,Brunton Steven L.,Kutz J. Nathan
Abstract
AbstractBoundary value problems (BVPs) play a central role in the mathematical analysis of constrained physical systems subjected to external forces. Consequently, BVPs frequently emerge in nearly every engineering discipline and span problem domains including fluid mechanics, electromagnetics, quantum mechanics, and elasticity. The fundamental solution, or Green’s function, is a leading method for solving linear BVPs that enables facile computation of new solutions to systems under any external forcing. However, fundamental Green’s function solutions for nonlinear BVPs are not feasible since linear superposition no longer holds. In this work, we propose a flexible deep learning approach to solve nonlinear BVPs using a dual-autoencoder architecture. The autoencoders discover an invertible coordinate transform that linearizes the nonlinear BVP and identifies both a linear operator L and Green’s function G which can be used to solve new nonlinear BVPs. We find that the method succeeds on a variety of nonlinear systems including nonlinear Helmholtz and Sturm–Liouville problems, nonlinear elasticity, and a 2D nonlinear Poisson equation and can solve nonlinear BVPs at orders of magnitude faster than traditional methods without the need for an initial guess. The method merges the strengths of the universal approximation capabilities of deep learning with the physics knowledge of Green’s functions to yield a flexible tool for identifying fundamental solutions to a variety of nonlinear systems.
Funder
Army Research Office
Air Force Office of Scientific Research
Publisher
Springer Science and Business Media LLC
Reference60 articles.
1. Stakgold, I. Boundary Value Problems of Mathematical Physics: 2-Volume Set Vol. 29 (Siam, 2000).
2. Fourier, J.-B.J. Théorie Analytique de la Chaleur (Chez Firmin Didot, 1822).
3. Jackson, J. D. Classical Electrodynamics (Wiley, 2007).
4. Yariv, A. Quantum Electronics (Wiley, 1989).
5. Stakgold, I. & Holst, M. J. Green’s Functions and Boundary Value Problems Vol. 99 (Wiley, 2011).
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