Enhancing Eigenvalue Approximation by Gradient Recovery
نویسندگان
چکیده
The polynomial preserving recovery (PPR) is used to enhance the finite element eigenvalue approximation. Remarkable fourth order convergence is observed for linear elements under structured meshes as well as unstructured initial meshes (produced by the Delaunay triangulation) with the conventional bisection refinement.
منابع مشابه
Enhancing eigenvalue approximation by gradient recovery on adaptive meshes
Gradient recovery has been widely used for a posteriori error estimates (see Ainsworth & Oden, 2000; Babuška & Strouboulis, 2001; Chen & Xu, 2007; Fierro & Veeser, 2006; Zhang, 2007; Zienkiewicz et al., 2005; Zienkiewicz & Zhu, 1987, 1992a,b). Recently, it has been employed to enhance the eigenvalue approximations by the finite-element method under certain mesh conditions (see Naga et al., 2006...
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ورودعنوان ژورنال:
- SIAM J. Scientific Computing
دوره 28 شماره
صفحات -
تاریخ انتشار 2006