Strong stability of explicit Runge-Kutta time discretizations
Numerical Analysis
2018-11-28 v1
Abstract
Motivated by studies on fully discrete numerical schemes for linear hyperbolic conservation laws, we present a framework on analyzing the strong stability of explicit Runge-Kutta (RK) time discretizations for semi-negative autonomous linear systems. The analysis is based on the energy method and can be performed with the aid of a computer. Strong stability of various RK methods, including a sixteen-stage embedded pair of order nine and eight, has been examined under this framework. Based on numerous numerical observations, we further characterize the features of strongly stable schemes. A both necessary and sufficient condition is given for the strong stability of RK methods of odd linear order.
Keywords
Cite
@article{arxiv.1811.10680,
title = {Strong stability of explicit Runge-Kutta time discretizations},
author = {Zheng Sun and Chi-Wang Shu},
journal= {arXiv preprint arXiv:1811.10680},
year = {2018}
}