arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2007.10856math.NAcs.NA
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三类梯度-分区协调有限元

Three families of grad-div-conforming finite elements

Qian Zhang, Zhimin Zhang

摘要:

在三维空间中构造了几个光滑的有限元de Rham复形,得到了三个梯度-div协调有限元族.最简单的单元对于四面体只有8个自由度,对于长方体只有14个自由度。这些元素自然导致符合近似quad-div问题。通过对每类单元的数值实验,验证了该单元求解四边形问题的正确性和有效性。

英文摘要:

Several smooth finite element de Rham complexes are constructed in three-dimensional space, which yield three families of grad-div conforming finite elements. The simplest element has only 8 degrees of freedom (DOFs) for a tetrahedron and 14 DOFs for a cuboid. These elements naturally lead to conforming approximations to quad-div problems. Numerical experiments for each family validate the correctness and efficiency of the elements for solving the quad-div problem.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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