Nonlinear long waves in shallow water for normalized Boussinesq equations

Abstract

In this work, we investigate a partial differential equation (PDE) derived from a Boussinesq system of two equations that describe the wave motion in shallow water when the wavelength is small compared to wave amplitude. The Lie point symmetries of the PDE are utilized to reduce it to an ordinary differential equation (ODE) the travelling wave solutions of which are obtained. These solutions are of trigonometric, hyperbolic and exponential types. Graphical representation of some solutions exhibiting solitary and cnoidal wave phenomena are presented.

Keywords

• Shallow water
• Solitary waves
• Boussinesq equations
• Lie symmetry analysis
• Travelling wave solutions