Practical splitting methods for the adaptive integration of nonlinear evolution equations. Part I: Construction of optimized schemes and pairs of schemes
This work provides practical tools for researchers needing efficient adaptive numerical integration of nonlinear evolution equations, though it is an incremental improvement on existing splitting methods.
The authors present new higher-order splitting methods for numerical integration of evolution equations, constructing optimized schemes and pairs of schemes for adaptive integrators via polynomial systems for splitting coefficients.
We present a number of new contributions to the topic of constructing efficient higher-order splitting methods for the numerical integration of evolution equations. Particular schemes are constructed via setup and solution of polynomial systems for the splitting coefficients. To this end we use and modify a recent approach for generating these systems for a large class of splittings. In particular, various types of pairs of schemes intended for use in adaptive integrators are constructed.