TY - JOUR T1 - Edge-Oriented Hexagonal Elements JO - Journal of Computational Mathematics VL - 4 SP - 430 EP - 439 PY - 2007 DA - 2007/08 SN - 25 DO - http://doi.org/ UR - https://global-sci.org/intro/article_detail/jcm/8702.html KW - Nonconforming finite element method, Hexagonal element, $Q_1$ element. AB -

In this paper, two new nonconforming hexagonal elements are presented, which are based on the trilinear function space $Q_1^{(3)}$ and are edge-oriented, analogical to the case of the rotated $Q_1$ quadrilateral element. A priori error estimates are given to show that the new elements achieve first-order accuracy in the energy norm and second-order accuracy in the $L^2$ norm. This theoretical result is confirmed by the numerical tests.