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arXiv 1801.07463math.NAcs.NA
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具有边界值校正的割有限元方法用于不可压缩斯托克斯方程

A cut finite element method with boundary value correction for the incompressible Stokes' equations

University College London(伦敦大学学院);Jönköping University(延雪平大学);Umeå University(于默奥大学)

Erik Burman, Peter Hansbo, Mats G. Larson

AI总结:

本文提出了一种适用于曲域的不可压缩斯托克斯方程的割有限元方法,通过引入离散域和边界值校正技术来处理曲边问题。

摘要:

我们为不可压缩斯托克斯方程设计了一种割有限元方法,允许计算网格中的域边界以非常通用的方式穿过元素。为便于实现,我们提出使用分段仿射离散域,即使物理域有曲边。狄利克雷边界条件通过Nitsche方法施加在离散边界上,曲物理边界的效应通过引入的边界值校正技术来处理。

英文摘要:

We design a cut finite element method for the incompressible Stokes equations on curved domains. The cut finite element method allows for the domain boundary to cut through the elements of the computational mesh in a very general fashion. To further facilitate the implementation we propose to use a piecewise affine discrete domain even if the physical domain has curved boundary. Dirichlet boundary conditions are imposed using Nitsche's method on the discrete boundary and the effect of the curved physical boundary is accounted for using the boundary value correction technique introduced for cut finite element methods in Burman, Hansbo, Larson, 'A cut finite element method with boundary value correction', Math. Comp. 87(310):633--657, 2018.

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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