A finite element approach for vector- and tensor-valued surface PDEs
A finite element approach for vector- and tensor-valued surface PDEs
复制标题
矢量值和张量值表面偏微分方程的有限元方法
DOI:
10.1016/j.jcp.2019.03.006
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发表时间:
2018
期刊:
影响因子:
--
通讯作者:
A. Voigt
中科院分区:
文献类型:
--
作者:
M. Nestler;I. Nitschke;A. Voigt
We derive a Cartesian componentwise description of the covariant derivative of tangential tensor fields of any degree on Riemannian manifolds. This allows to reformulate any vector- and tensor-valued surface PDE in a form suitable to be solved by established tools for scalar-valued surface PDEs. We consider piecewise linear Lagrange surface finite elements on triangulated surfaces and validate the approach by a vector- and a tensor-valued surface Helmholtz problem on an ellipsoid. We experimentally show optimal (linear) order of convergence for these problems. The full functionality is demonstrated by solving a surface Landau-de Gennes problem on the Stanford bunny. All tools required to apply this approach to other vector- and tensor-valued surface PDEs are provided.
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