Special Session 104: Recent Developments in High-Order Numerical Methods for Multiscale/Multiphysics Partial Differential Equations

Efficient and Parallel Solution of High-order Continuous Time Galerkin for Dissipative and Wave Propagation Problems
Yong Liu
Academy of Mathematics and Systems Science, CAS
Peoples Rep of China
Co-Author(s):    Zhiming Chen
Abstract:
In this talk, I will 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 that 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 will be shown to confirm our theoretical results.