Analysis of Backward Euler Primal DPG Methods
Analysis of Backward Euler Primal DPG Methods
复制标题
后向欧拉原始DPG方法分析
DOI:
--
复制
发表时间:
2021
期刊:
影响因子:
--
通讯作者:
M. Karkulik
中科院分区:
文献类型:
--
作者:
T. Führer;N. Heuer;M. Karkulik
Abstract We analyze backward Euler time stepping schemes for a primal DPG formulation of a class of parabolic problems. Optimal error estimates are shown in a natural norm and in the L 2 {L^{2}} norm of the field variable. For the heat equation the solution of our primal DPG formulation equals the solution of a standard Galerkin scheme and, thus, optimal error bounds are found in the literature. In the presence of advection and reaction terms, however, the latter identity is not valid anymore and the analysis of optimal error bounds requires to resort to elliptic projection operators. It is essential that these operators be projections with respect to the spatial part of the PDE, as in standard Galerkin schemes, and not with respect to the full PDE at a time step, as done previously.
影响因子:
7.2
作者:
Muñoz-Matute, Judit;Pardo, David;Demkowicz, Leszek
通讯作者:
Demkowicz, Leszek
影响因子:
4.1
作者:
Munoz-Matute, J.;Pardo, D.;Demkowicz, L.
通讯作者:
Demkowicz, L.