arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2007.13513math.NAcs.NA
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二维曲边问题的混合虚元法

The Mixed Virtual Element Method on curved edges in two dimensions

Franco Dassi, Alessio Fumagalli, Davide Losapio, Stefano Scialò, Anna Scotti, Giuseppe Vacca

摘要:

在这项工作中,我们提出了一个扩展的混合虚拟单元法(VEM)的二维计算网格与曲线的边缘元素。通过具有曲线几何特征的域的直线边缘(诸如域边界的一部分或内部界面)的近似可能引入几何误差,该几何误差降低了该方案的预期收敛阶。在目前的工作中,一个合适的VEM近似空间,提出了一致的处理曲线几何对象,从而恢复最佳的收敛速度。所产生的数值方案,连同其理论分析和几个数值测试用例,以验证所提出的方法。

英文摘要:

In this work, we propose an extension of the mixed Virtual Element Method (VEM) for bi-dimensional computational grids with curvilinear edge elements. The approximation by means of rectilinear edges of a domain with curvilinear geometrical feature, such as a portion of domain boundary or an internal interface, may introduce a geometrical error that degrades the expected order of convergence of the scheme. In the present work a suitable VEM approximation space is proposed to consistently handle curvilinear geometrical objects, thus recovering optimal convergence rates. The resulting numerical scheme is presented along with its theoretical analysis and several numerical test cases to validate the proposed approach.

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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