@Article{AAMM-7-196, author = {Chen , YanpingLeng , Haitao and Liu , Li-Bin}, title = {Error Analysis for a Non-Monotone FEM for a Singularly Perturbed Problem with Two Small Parameters}, journal = {Advances in Applied Mathematics and Mechanics}, year = {2018}, volume = {7}, number = {2}, pages = {196--206}, abstract = {

In this paper, we consider a singularly perturbed convection-diffusion problem. The problem involves two small parameters that gives rise to two boundary layers at two endpoints of the domain. For this problem, a non-monotone finite element methods is used. A priori error bound in the maximum norm is obtained. Based on the a priori error bound, we show that there exists Bakhvalov-type mesh that gives optimal error bound of $\mathcal{O}(N^{−2})$ which is robust with respect to the two perturbation parameters. Numerical results are given that confirm the theoretical result.

}, issn = {2075-1354}, doi = {https://doi.org/10.4208/aamm.2013.m399}, url = {http://global-sci.org/intro/article_detail/aamm/12044.html} }