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Weakly non-local solitary wave solutions of a singularly perturbed Boussinesq equation

Author

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  • Daripa, Prabir
  • Dash, Ranjan K.

Abstract

We study the singularly perturbed (sixth-order) Boussinesq equation recently introduced by Daripa and Hua [Appl. Math. Comput. 101 (1999) 159]. This equation describes the bi-directional propagation of small amplitude and long capillary-gravity waves on the surface of shallow water for bond number less than but very close to 1/3. On the basis of far-field analyses and heuristic arguments, we show that the traveling wave solutions of this equation are weakly non-local solitary waves characterized by small amplitude fast oscillations in the far-field. Using various analytical and numerical methods originally devised to obtain this type of weakly non-local solitary wave solutions of the singularly perturbed (fifth-order) KdV equation, we obtain weakly non-local solitary wave solutions of the singularly perturbed (sixth-order) Boussinesq equation and provide estimates of the amplitude of oscillations which persist in the far-field.

Suggested Citation

  • Daripa, Prabir & Dash, Ranjan K., 2001. "Weakly non-local solitary wave solutions of a singularly perturbed Boussinesq equation," Mathematics and Computers in Simulation (MATCOM), Elsevier, vol. 55(4), pages 393-405.
    • Handle: RePEc:eee:matcom:v:55:y:2001:i:4:p:393-405
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