Variational analysis of the discontinuous Galerkin time-stepping method for parabolic equations
Variational analysis of the discontinuous Galerkin time-stepping method for parabolic equations
复制标题
抛物方程间断伽辽金时间步进法的变分分析
DOI:
10.1093/imanum/draa017
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
N. Saito
中科院分区:
文献类型:
--
作者:
Khan S.;Lee O.;Dion T.;Zollitsch C. W.;Seki S.;Tokura Y.;Breeze J. D.;Kurebayashi H.;N. Saito
The discontinuous Galerkin (DG) time-stepping method applied to abstract evolution equation of parabolic type is studied using a variational approach. We establish the inf-sup condition or Babuška–Brezzi condition for the DG bilinear form. Then, a nearly best approximation property and a nearly symmetric error estimate are obtained as corollaries. Moreover, the optimal order error estimates under appropriate regularity assumption on the solution are derived as direct applications of the standard interpolation error estimates. Our method of analysis is new for the DG time-stepping method; it differs from previous works by which the method is formulated as the one-step method. We apply our abstract results to the finite element approximation of a second-order parabolic equation with space-time variable coefficient functions in a polyhedral domain, and derive the optimal order error estimates in several norms.
DOI:
10.1016/s0168-2024(01)x8001-6
发表时间:
2001
影响因子:
2.1
作者:
藤田 宏;齊藤 宣一;鈴木 貴
通讯作者:
鈴木 貴
DOI:
--
发表时间:
2016
期刊:
Comput. Methods Appl. Math.
影响因子:
--
作者:
S. Larsson;M. Molteni
通讯作者:
M. Molteni
影响因子:
2.9
作者:
F. Tantardini;A. Veeser
通讯作者:
A. Veeser