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arXiv · 2303.05008

Efficient and Parallel Solution of High-order Continuous Time Galerkin for Dissipative and Wave Propagation Problems

Zhiming Chen·Yong Liu
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Abstract

We propose efficient and parallel algorithms for the implementation of the high-order continuous time Galerkin method for dissipative and wave propagation problems. By using Legendre polynomials as shape functions, we obtain a special structure of the stiffness matrix which allows us to extend the diagonal Pad\'e approximation to solve ordinary differential equations with source terms. The unconditional stability, $hp$ error estimates, and $hp$ superconvergence at the nodes of the continuous time Galerkin method are proved. Numerical examples confirm our theoretical results.

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Zhiming Chen, Yong Liu. 2023-03-09. Efficient and Parallel Solution of High-order Continuous Time Galerkin for Dissipative and Wave Propagation Problems. https://arxiv.org/abs/2303.05008

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