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Efficient boundary corrected Strang splitting

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  • Einkemmer, Lukas
  • Moccaldi, Martina
  • Ostermann, Alexander

Abstract

Strang splitting is a well established tool for the numerical integration of evolution equations. It allows the application of tailored integrators for different parts of the vector field. However, it is also prone to order reduction in the case of non-trivial boundary conditions. This order reduction can be remedied by correcting the boundary values of the intermediate splitting step. In this paper, three different approaches for constructing such a correction in the case of inhomogeneous Dirichlet, Neumann, and mixed boundary conditions are presented. Numerical examples that illustrate the effectiveness and benefits of these corrections are included.

Suggested Citation

  • Einkemmer, Lukas & Moccaldi, Martina & Ostermann, Alexander, 2018. "Efficient boundary corrected Strang splitting," Applied Mathematics and Computation, Elsevier, vol. 332(C), pages 76-89.
    • Handle: RePEc:eee:apmaco:v:332:y:2018:i:c:p:76-89
    DOI: 10.1016/j.amc.2018.03.006
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    Cited by:

    1. Cano, B. & Moreta, M.J., 2020. "A modified Gautschi’s method without order reduction when integrating boundary value nonlinear wave problems," Applied Mathematics and Computation, Elsevier, vol. 373(C).

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