TY - JOUR T1 - High Accuracy for Mixes Finite Element Methods in Raviart-Thomas Element JO - Journal of Computational Mathematics VL - 2 SP - 175 EP - 182 PY - 1996 DA - 1996/04 SN - 14 DO - http://doi.org/ UR - https://global-sci.org/intro/article_detail/jcm/9228.html KW - AB -

This paper deals with Raviart-Thomas element ($Q_{2,1}\times Q_{1,2}-Q_1$ element). Apart from its global superconvergence property of fourth order, we prove that a postprocessed extrapolation can globally increased the accuracy by fifth order.