TY - JOUR T1 - An Optimal Uniform a Priori Error Estimate for an Unsteady Singularly Perturbed Problem AU - Vlasak , M. AU - Roos , H.-G. JO - International Journal of Numerical Analysis and Modeling VL - 1 SP - 24 EP - 33 PY - 2014 DA - 2014/11 SN - 11 DO - http://doi.org/ UR - https://global-sci.org/intro/article_detail/ijnam/512.html KW - discontinuous Galerkin, convection-diffusion, layer adapted mesh, error estimate. AB -
A time-dependent convection-diffusion problem is discretized by the Galerkin finite element method in space with bilinear elements on a general layer adapted mesh and in time by discontinuous Galerkin method. We present optimal error estimates. The estimates hold true for consistent stabilization too.