On stability and conservation properties of (S)epirk integrators in the context of discretized pdes
On stability and conservation properties of (S)epirk integrators in the context of discretized pdes
复制标题
离散偏微分方程背景下 (S)epirk 积分器的稳定性和守恒性质
DOI:
10.1007/978-3-319-91548-7_46
复制
发表时间:
2018
期刊:
影响因子:
--
通讯作者:
Andreas Meister
中科院分区:
文献类型:
--
作者:
Veronika Straub;Sigrun Ortleb;Philipp Birken;Andreas Meister
Exponential integrators are becoming increasingly popular for stiff problems of high dimension due to their attractive property of solving the linear part of the system exactly and hence being A-stable. In practice, however, exponential integrators are implemented using approximation techniques to matrix-vector products involving functions of the matrix exponential (the so-called-functions) to make them efficient and competitive to other state-of-the-art schemes. We will examine linear stability and provide a Courant–Friedrichs–Lewy (CFL) condition of special classes of exponential integrator schemes called EPIRK and sEPIRK and demonstrate their dependence on the parameters of the embedded approximation technique. Furthermore, a conservation property of the EPIRK schemes is proven.
DOI:
10.1002/pamm.201610422
发表时间:
2016
期刊:
PAMM
影响因子:
--
作者:
Veronika Straub;Sigrun Ortleb;Philipp Birken;Andreas Meister
通讯作者:
Andreas Meister
影响因子:
4.1
作者:
M. Tokman
通讯作者:
M. Tokman