Accurate fast computation of steady two-dimensional surface gravity waves in arbitrary depth
Abstract
This paper describes an efficient algorithm for computing steady two-dimensional surface gravity wave in irrotational motion. The algorithm complexity is O(N log N), N being the number of Fourier modes. The algorithm allows the arbitrary precision computation of waves in arbitrary depth, i.e., it works efficiently for Stokes, cnoidal and solitary waves, even for quite large steepnesses. The method is based on conformal mapping, Babenko equation rewritten in a suitable way, pseudo-spectral method and Petviashvili's iterations. The efficiency of the algorithm is illustrated via some relevant numerical examples. The code is open source, so interested readers can easily check the claims, use and modify the algorithm.
Cite
@article{arxiv.1702.04132,
title = {Accurate fast computation of steady two-dimensional surface gravity waves in arbitrary depth},
author = {Didier Clamond and Denys Dutykh},
journal= {arXiv preprint arXiv:1702.04132},
year = {2020}
}
Comments
36 pages, 7 figures, 3 tables, 48 references, 4 appendices. Other author papers can be downloaded at http://www.denys-dutykh.com/