The analysis of operator splitting for the Gardner equation

This paper is concerned with the convergence property of the Strang splitting for the Gardner equation. We assume that the Gardner equation is locally well-posed and the solution is bounded. We first obtain the regularity properties of the nonlinear divided equation. With these regularity properties...

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Bibliographic Details
Published in:Applied numerical mathematics 2019-10, Vol.144, p.151-175
Main Authors: Zhao, Jingjun, Zhan, Rui, Xu, Yang
Format: Article
Language:English
Subjects:
Convergence
Gardner equation
Operator splitting
Strang splitting
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Summary:This paper is concerned with the convergence property of the Strang splitting for the Gardner equation. We assume that the Gardner equation is locally well-posed and the solution is bounded. We first obtain the regularity properties of the nonlinear divided equation. With these regularity properties, the Strang splitting is proved to converge at the expected rate in L2. Numerical experiments demonstrate the theoretical result and serve to compare the accuracy and efficiency of different time stepping methods. Finally, the proposed method is applied to simulate the multi solitons collisions for the Gardner equation.
ISSN:0168-9274
1873-5460
DOI:10.1016/j.apnum.2019.04.017