TY - JOUR T1 - Analysis of an Alternating Direction Method Applied to Singularly Perturbed Reaction-Diffusion Problems JO - International Journal of Numerical Analysis and Modeling VL - 3 SP - 507 EP - 519 PY - 2010 DA - 2010/07 SN - 7 DO - http://doi.org/ UR - https://global-sci.org/intro/article_detail/ijnam/734.html KW - Reaction-diffusion problems, layer-adapted meshes, alternating directions, singular perturbation. AB -

We present an analysis of an Alternating Direction Implicit (ADI) scheme for a linear, singularly perturbed reaction-diffusion equation. By providing an expression for the error that separates the temporal and spatial components, we can use existing results for steady-state problems to give a succinct analysis for the time-dependent problem, and that generalizes for various layer-adapted meshes. We report the results of numerical experiments that support the theoretical findings. In addition, we provide a numerical comparison between the ADI and Euler techniques, as well details of the computational advantage gained by parallelizing the algorithm.