Comparison of Pseudospectral and Spectral Approximation

Comparison of Pseudospectral and Spectral Approximation
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DOI:
10.1002/sapm1972513253
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发表时间:
1972-09
影响因子:
2.7
通讯作者:
S. Orszag
S. Orszag
中科院分区:
数学3区
文献类型:
--
作者:
S. Orszag

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在一些简单的模型问题中,比较了伪谱(配置)近似和谱(Galerkin)近似的精度。结果发现,尽管在伪谱近似中包含了混叠项,但两种近似都给出了类似的误差。
The accuracy of pseudospectral (collocation) approximation is compared to spectral (Galerkin) approximation in some simple model problems. It is found that both approximations give similar errors, despite the inclusion of aliasing terms in pseudospectral approximation.