A finite element convergence analysis for 3D Stokes equations in case of variational crimes

A finite element convergence analysis for 3D Stokes equations in case of variational crimes
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变分犯罪情况下 3D Stokes 方程的有限元收敛分析

DOI:
10.1023/a:1022235512626
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发表时间:
2000
影响因子:
0.7
通讯作者:
P. Knobloch
P. Knobloch
中科院分区:
数学4区
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作者:
P. Knobloch

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我们研究具有非标准边界条件的斯托克斯方程的有限元离散化,在具有弯曲、分段平滑边界的有界三维域中定义。对于这个域的四面体三角剖分,我们证明,在离散问题的一般假设下,并且在弱解上没有任何额外的规则性假设,离散解收敛到弱解。给出了适当的有限元空间的示例。
We investigate a finite element discretization of the Stokes equations with nonstandard boundary conditions, defined in a bounded three-dimensional domain with a curved, piecewise smooth boundary. For tetrahedral triangulations of this domain we prove, under general assumptions on the discrete problem and without any additional regularity assumptions on the weak solution, that the discrete solutions converge to the weak solution. Examples of appropriate finite element spaces are given.
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