A modified Petviashvili method using simple stabilizing factors to compute solitary waves

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A modified Petviashvili method is proposed for the computation of steady solitary-wave solutions to a nonlinear dispersive wave equation in fluids. The main difference between the Petviashvili's original method and the proposed method lies in the choice of a stabilizing factor. Compared to the original Petviashvili method, the proposed method adopts much simpler stabilizing factors such as the maximum, the -norm, and the central value of the intermediate relevant terms during iteration in the wavenumber domain. The motivation for using these stabilizing factors derives from the power method in the classical matrix eigenvalue problem, where the same stabilizing factors are often adopted to find the dominant eigenvector. In a similar vein, the Fourier-transformed nonlinear wave equation with power-law nonlinearity can be interpreted as a nonlinear eigenvalue problem, where the associated matrix is unknown, and can be iteratively solved by the proposed method, in which the resultant solitary-wave solution corresponds to the inverse Fourier transform of the final dominant eigenvector. Based on the proposed method, steady 2-D and 3-D solitary waves are effectively obtained for several exemplary nonlinear dispersive wave equations with power-law nonlinearities.
Publisher
SPRINGER
Issue Date
2015-04
Language
English
Article Type
Article
Keywords

GRAVITY-CAPILLARY WAVES; DEEP-WATER; BENJAMIN EQUATION; ITERATION METHODS; CONVERGENCE; LUMPS; FORM

Citation

JOURNAL OF ENGINEERING MATHEMATICS, v.91, no.1, pp.37 - 57

ISSN
0022-0833
DOI
10.1007/s10665-014-9744-z
URI
http://hdl.handle.net/10203/196059
Appears in Collection
ME-Journal Papers(저널논문)
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