@Article{JCM-35-265, author = {Cheng , Yao and Zhang , Qiang}, title = {Local Analysis of the Fully Discrete Local Discontinuous Galerkin Method for the Time-Dependent Singularly Perturbed Problem}, journal = {Journal of Computational Mathematics}, year = {2017}, volume = {35}, number = {3}, pages = {265--288}, abstract = {

In this paper we consider the fully discrete local discontinuous Galerkin method, where the third order explicit Runge-Kutta time marching is coupled. For the one-dimensional time-dependent singularly perturbed problem with a boundary layer, we shall prove that the resulted scheme is not only of good behavior at the local stability, but also has the double-optimal local error estimate. It is to say, the convergence rate is optimal in both space and time, and the width of the cut-off subdomain is also nearly optimal, if the boundary condition at each intermediate stage is given in a proper way. Numerical experiments are also given.

}, issn = {1991-7139}, doi = {https://doi.org/10.4208/jcm.1605-m2015-0398}, url = {http://global-sci.org/intro/article_detail/jcm/9773.html} }