Sparse spectral methods for partial differential equations on spherical caps
Sparse spectral methods for partial differential equations on spherical caps
复制标题
球冠偏微分方程的稀疏谱方法
DOI:
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复制
发表时间:
2020
影响因子:
--
通讯作者:
S. Olver
中科院分区:
文献类型:
--
作者:
Ben Snowball;S. Olver
In recent years, sparse spectral methods for solving partial differential equations have been derived using hierarchies of classical orthogonal polynomials (OPs) on intervals, disks, disk-slices and triangles. In this work, we extend the methodology to a hierarchy of non-classical multivariate OPs on spherical caps. The entries of discretizations of partial differential operators can be effectively computed using formulae in terms of (non-classical) univariate OPs. We demonstrate the results on partial differential equations involving the spherical Laplacian and biharmonic operators, showing spectral convergence with discretizations that can be made well conditioned using a simple preconditioner.
DOI:
10.1137/19m1245888
发表时间:
2019-01
期刊:
SIAM J. Sci. Comput.
影响因子:
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作者:
S. Olver;Alex Townsend;G. Vasil
通讯作者:
S. Olver;Alex Townsend;G. Vasil
DOI:
10.48550/arxiv.1707.00855
发表时间:
2017
期刊:
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影响因子:
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作者:
Shipton J
通讯作者:
Shipton J