摘要
利用Bramble Hilbert Xu引理对Laplace特征值用一个非协调元作对称展开,给出该单元在研究Laplace特征值问题时的误差主项,并进一步给出外推结果,最后给出数值验证。
By using nonconforming element and Bramble-Hilbert-Xu Lemma, Laplace approximating eigenvalue is given by the means of asymptotic expansion and the main error terms are presented ,too. The extrapolation results are existed, then these numerical results are tested with uniform meshes and anisotropic meshes.
出处
《南阳师范学院学报》
CAS
2004年第12期10-14,共5页
Journal of Nanyang Normal University
关键词
Laplace特征值问题
对称展开和外推
非协调元
Laplace eigenvalue problem
asymptotic expansion and extrapolation
nonconforming element