Geometric numerical schemes for the KdV equation

  • Authors:
  • D. Dutykh;M. Chhay;F. Fedele

  • Affiliations:
  • Université de Savoie, Le Bourget-du-Lac Cedex, France 73376;Université de Savoie, Le Bourget-du-Lac Cedex, France 73376;School of Civil and Environmental Engineering and School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, USA

  • Venue:
  • Computational Mathematics and Mathematical Physics
  • Year:
  • 2013

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Abstract

Geometric discretizations that preserve certain Hamiltonian structures at the discrete level has been proven to enhance the accuracy of numerical schemes. In particular, numerous symplectic and multi-symplectic schemes have been proposed to solve numerically the celebrated Korteweg-de Vries equation. In this work, we show that geometrical schemes are as much robust and accurate as Fourier-type pseudospectral methods for computing the long-time KdV dynamics, and thus more suitable to model complex nonlinear wave phenomena.