IMEX peer methods for fast-wave–slow-wave problems
IMEX peer methods for fast-wave–slow-wave problems
复制标题
快波-慢波问题的 IMEX 对等方法
DOI:
10.1016/j.apnum.2017.02.016
复制
发表时间:
2017
影响因子:
2.8
通讯作者:
R. Weiner
中科院分区:
文献类型:
--
作者:
B. Soleimani;O. Knoth;R. Weiner
Differential equations with both stiff and nonstiff parts can be solved efficiently by implicit–explicit (IMEX) methods. There have been considered various approaches in the literature. In this paper we introduce IMEX peer methods. We show that the combination of s-stage explicit and implicit peer methods, both of order p, gives an IMEX peer method of the same order. We construct methods of order p= s for s= 3, 4, where we compute the free parameters numerically to give good stability with respect to fast-wave–slow-wave problems from weather prediction. We implement these methods with and without step size control. Tests and comparisons with other methods for problems mostly from weather prediction show the high potential of IMEX peer methods.
DOI:
10.1016/j.jcp.2017.02.034
发表时间:
2017
期刊:
J. Comput. Phys.
影响因子:
--
作者:
Lang J;Hundsdorfer W
通讯作者:
Hundsdorfer W