Deep Learning Method Based on Physics-Informed Neural Network for 3D Anisotropic Steady-State Heat Conduction Problems

Zebin Xing, Heng Cheng and Jing Cheng ()
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Zebin Xing: School of Applied Science, Taiyuan University of Science and Technology, Taiyuan 030024, China
Heng Cheng: School of Applied Science, Taiyuan University of Science and Technology, Taiyuan 030024, China
Jing Cheng: College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518061, China

Mathematics, 2023, vol. 11, issue 19, 1-21

Abstract: This paper uses the physical information neural network (PINN) model to solve a 3D anisotropic steady-state heat conduction problem based on deep learning techniques. The model embeds the problem’s governing equations and boundary conditions into the neural network and treats the neural network’s output as the numerical solution of the partial differential equation. Then, the network is trained using the Adam optimizer on the training set. The output progressively converges toward the accurate solution of the equation. In the first numerical example, we demonstrate the convergence of the PINN by discussing the effect of the neural network’s number of layers, each hidden layer’s number of neurons, the initial learning rate and decay rate, the size of the training set, the mini-batch size, the amount of training points on the boundary, and the training steps on the relative error of the numerical solution, respectively. The numerical solutions are presented for three different examples. Thus, the effectiveness of the method is verified.

Keywords: deep learning; neural network; steady state; anisotropic heat conduction (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2023
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