@Article{IJNAM-15-6, author = {Yao, Cheng and Zhang, Qiang and Wang, Haijin}, title = {Local Analysis of the Local Discontinuous Galerkin Method with the Generalized Alternating Numerical Flux for Two-Dimensional Singularly Perturbed Problem}, journal = {International Journal of Numerical Analysis and Modeling}, year = {2018}, volume = {15}, number = {6}, pages = {785--810}, abstract = {

In this paper, we analyze the local discontinuous Galerkin method with the generalized alternating numerical flux for two-dimensional singularly perturbed problem with outflow boundary layers. By virtue of the two-dimensional generalized Gauss-Radau projection and energy technique with suitable weight function, we obtain the double-optimal error estimate, namely, the convergence rate in L2-norm out of the outflow boundary layer is optimal, and the width of boundary layer is quasi-optimal, when piecewise tensor product polynomial space on quasi-uniform Cartesian meshes are used. Numerical experiments are given to verify the theoretical results.

}, issn = {2617-8710}, doi = {https://doi.org/2018-IJNAM-12609}, url = {https://global-sci.com/article/83149/local-analysis-of-the-local-discontinuous-galerkin-method-with-the-generalized-alternating-numerical-flux-for-two-dimensional-singularly-perturbed-problem} }