@Article{CiCP-36-908, author = {Li , DongfangLi , Xiaoxi and Yang , Jiang}, title = {Relaxation Exponential Runge-Kutta Methods and Their Applications to Semilinear Dissipative/Conservative Systems}, journal = {Communications in Computational Physics}, year = {2024}, volume = {36}, number = {4}, pages = {908--942}, abstract = {

This paper presents a family of novel relaxation exponential Runge-Kutta methods for semilinear partial differential equations with dissipative/conservative energy. The novel methods are developed by using the relaxation idea and adding a well-designed governing equation to explicit exponential Runge-Kutta methods. It is shown that the proposed methods can be of high-order accuracy and energy-stable/conserving with mild time step restrictions. In contrast, the previous explicit exponential-type methods are not energy-conserving. Several numerical experiments on KdV equations, Schrödinger equations and Navier-Stokes equations are carried out to illustrate the effectiveness and high efficiency of the methods.

}, issn = {1991-7120}, doi = {https://doi.org/10.4208/cicp.OA-2023-0241}, url = {http://global-sci.org/intro/article_detail/cicp/23481.html} }