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Stability of Galerkin discretizations of a mixed space–time variational formulation of parabolic evolution equations
IMA Journal of Numerical Analysis ( IF 2.1 ) Pub Date : 2020-02-04 , DOI: 10.1093/imanum/drz069
Rob Stevenson 1 , Jan Westerdiep 1
Affiliation  

We analyze Galerkin discretizations of a new well-posed mixed space–time variational formulation of parabolic partial differential equations. For suitable pairs of finite element trial spaces, the resulting Galerkin operators are shown to be uniformly stable. The method is compared to two related space–time discretization methods introduced by Andreev (2013, Stability of sparse space-time finite element discretizations of linear parabolic evolution equations. IMA J. Numer. Anal., 33, 242–260) and by Steinbach (2015, Space-time finite element methods for parabolic problems. Comput. Methods Appl. Math., 15, 551–566).

中文翻译:

抛物线发展方程混合时空变分形式的Galerkin离散的稳定性

我们分析了抛物线偏微分方程的一个新的适定混合时空变分形式的Galerkin离散化。对于合适的有限元试验空间对,结果表明Galerkin算子是一致稳定的。将该方法与Andreev(2013年,线性抛物线演化方程的稀疏时空有限元离散化的稳定性,IMA J. Numer。Anal。,33,242–260)和Steinbach引入的两种相关的时空离散化方法进行了比较。(2015年,抛物线问题的时空有限元方法。计算方法应用数学,15,551–566)。
更新日期:2020-02-04
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