The ultraspherical spectral element method
The ultraspherical spectral element method
复制标题
超球形光谱元法
DOI:
10.1016/j.jcp.2020.110087
复制
发表时间:
2021
影响因子:
4.1
通讯作者:
Townsend, Alex
中科院分区:
文献类型:
--
作者:
Fortunato, Dan;Hale, Nick;Townsend, Alex
We introduce a novel spectral element method based on the ultraspherical spectral method and the hierarchical Poincaré–Steklov scheme for solving second-order linear partial differential equations on polygonal domains with unstructured quadrilateral or triangular meshes. Properties of the ultraspherical spectral method lead to almost banded linear systems, allowing the element method to be competitive in the high-polynomial regime (p> 5). The hierarchical Poincaré–Steklov scheme enables precomputed solution operators to be reused, allowing for fast elliptic solves in implicit and semi-implicit time-steppers. The resulting spectral element method achieves an overall computational complexity of O (p 4/h 3) for mesh size h and polynomial order p, enabling hp-adaptivity to be efficiently performed. We develop an open-source software system, ultraSEM, for flexible, user-friendly spectral element computations in MATLAB.
登录
查看更多内容
影响因子:
3.1
作者:
Will Pazner
通讯作者:
Will Pazner
影响因子:
1.5
作者:
T. Babb;A. Gillman;S. Hao;P. Martinsson
通讯作者:
P. Martinsson
影响因子:
3.1
作者:
P. Geldermans;A. Gillman
通讯作者:
A. Gillman
影响因子:
4.1
作者:
Yabin Zhang;A. Gillman
通讯作者:
A. Gillman
影响因子:
2.1
作者:
D. Fortunato;Alex Townsend
通讯作者:
D. Fortunato;Alex Townsend