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hal-00697129, version 3

SOLUTION OF 2D BOUSSINESQ SYSTEMS WITH FREEFEM++: THE FLAT BOTTOM CASE

Georges Sadaka (, http://lamfa.u-picardie.fr/sadaka/) 1

(2012-05-14)

Abstract: We consider here different family of Boussinesq systems in two space dimensions. These systems approximate the three-dimensional Euler equations and consist of three coupled nonlinear dispersive wave equations that describe propagation of long surface waves of small amplitude in ideal fluids over a horizontal bottom. We present here a FreeFem++ code aimed at solving numerically these systems where a discretization using P1 finite element for these systems was taken in space and a second order Runge-Kutta scheme in time. We give the detail of our code where we use a mesh adaptation technique. An optimization of the used algorithm is done and a comparison of the solution for different Boussinesq family is done too. The results we obtained agree with those of the literature.

  • 1:  Laboratoire Amiénois de Mathématique Fondamentale et Appliquée (LAMFA)
  • CNRS : UMR6140 – Université de Picardie Jules Verne
  • Domain : Mathematics/Numerical Analysis
    Mathematics/Analysis of PDEs
  • Keywords : Boussinesq systems – KdV-KdV – BBM-BBM – Bona-Smith – adaptmesh – finite element method – FreeFem++.
  • Available versions :  v1 (2012-05-14) v2 (2012-05-14) v3 (2012-07-09)
 
  • hal-00697129, version 3
  • oai:hal.archives-ouvertes.fr:hal-00697129
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  • Submitted on: Friday, 6 July 2012 15:21:45
  • Updated on: Monday, 9 July 2012 08:44:38