Enforce the Dirichlet boundary condition by volume constraint in Point Integral method

Enforce the Dirichlet boundary condition by volume constraint in Point Integral method
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DOI:
10.4310/cms.2017.v15.n6.a12
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发表时间:
2015-06
期刊:
arXiv: Numerical Analysis
影响因子:
--
通讯作者:
Zuoqiang Shi
Zuoqiang Shi
中科院分区:
其他
文献类型:
--
作者:
Zuoqiang Shi

文献摘要

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最近,Shi和Sun提出了点积分方法(PIM)来离散点云上的Laplace-Beltrami算子。在PIM中,Neumann边界是自然的,但Dirichlet边界需要一些特殊的处理。在我们以前的工作中,我们使用Robin边界来近似Dirichlet边界。本文介绍了利用杜等提出的体积约束处理点积分法中Dirichlet边界条件的另一种方法。
Recently, Shi and Sun proposed Point Integral method (PIM) to discretize Laplace-Beltrami operator on point cloud. In PIM, Neumann boundary is nature, but Dirichlet boundary needs some special treatment. In our previous work, we use Robin boundary to approximate Dirichlet boundary. In this paper, we introduce another approach to deal with the Dirichlet boundary condition in point integral method using the volume constraint proposed by Du et.al.