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Numerical approximation to Benjamin type equations. Generation and stability of solitary waves

journal contribution
posted on 17.06.2020, 22:04 by VA Dougalis, A Duran, Dimitrios Mitsotakis
© 2018 Elsevier B.V. This paper is concerned with the study, by computational means, of the generation and stability of solitary-wave solutions of generalized versions of the Benjamin equation. The numerical generation of the solitary-wave profiles is accurately performed with a modified Petviashvili method which includes extrapolation to accelerate the convergence. In order to study the dynamics of the solitary waves the equations are discretized in space with a Fourier pseudospectral collocation method and a fourth-order, diagonally implicit Runge–Kutta method of composition type as time-stepping integrator. The stability of the waves is numerically studied by performing experiments with small and large perturbations of the solitary pulses as well as interactions of solitary waves.

History

Preferred citation

Dougalis, V.A., Duran, A. & Mitsotakis, D. (2019). Numerical approximation to Benjamin type equations. Generation and stability of solitary waves. Wave Motion, 85, 34-56. https://doi.org/10.1016/j.wavemoti.2018.11.002

Journal title

Wave Motion

Volume

85

Publication date

01/01/2019

Pagination

34-56

Publisher

Elsevier BV

Publication status

Published

ISSN

0165-2125

eISSN

1878-433X

Language

en

Exports