Method of lines solutions of the extended Boussinesq equations

Authors:
S. Hamdi;W. H. Enright;Y. Ouellet;W. E. Schiesser
Affiliations:
Baird & Associates Coastal Engineers, 1145 Hunt Club Road, Suite 500 Ottawa, Ont., Canada K1V 0Y3;Department of Computer Science, University of Toronto, 10 King's College Road, Toronto, Canada M5S 3G4;Département de Génie Civil, Université Laval, Qué., Canada G1K 7P4;Mathematics and Engineering, Lehigh University, Bethlehem, PA 18015, USA
Venue:
Journal of Computational and Applied Mathematics - Special issue on the method of lines: Dedicated to Keith Miller
Year:
2005

Citing 3
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Abstract

A numerical solution procedure based on the method of lines for solving the Nwogu one-dimensional extended Boussinesq equations is presented. The numerical scheme is accurate up to fifth-order in time and fourth-order accurate in space, thus reducing all truncation errors to a level smaller than the dispersive terms retained by most extended Boussinesq models. Exact solitary wave solutions and invariants of motions recently derived by the authors are used to specify initial data for the incident solitary waves in the numerical model of Nwogu and for the verification of the associated computed solutions. The invariants of motions and several error measures are monitored in order to assess the conservative properties and the accuracy of the numerical scheme. The proposed method of lines solution procedure is general and can be easily modified to solve a wide range of Boussinesq-like equations in coastal engineering. .