Abstract

Using bifurcation method and numerical simulation approach of dynamical systems, we study a two-component Fornberg-Whitham equation. Two types of bounded traveling wave solutions are found, that is, the kink-like wave and compacton-like wave solutions. The planar graphs of these solutions are simulated by using software Mathematica; meanwhile, two new phenomena are revealed; that is, the periodic wave solution can become the kink-like wave or compacton-like wave solution under some conditions, respectively. Exact implicit or parameter expressions of these solutions are given.

Highlights

  • The Fornberg-Whitham equation ut − uxxt + ux + uux = uuxxx + 3uxuxx (1)was used to study the qualitative behaviors of wave breaking [1]

  • We have found two types of bounded traveling wave solutions for a two-component Fornberg-Whitham equation (see (4)), that is, the compacton-like wave and kinklike wave solutions

  • In different Cases i (i = 1– 16), the exact implicit or parameter expressions of kink-like wave and compacton-like wave solutions are given

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Summary

Introduction

Was used to study the qualitative behaviors of wave breaking [1]. It admits a wave of the greatest height, as a peaked limiting form of the traveling wave solution [2], u(x, t) = Ãexp((1/2)|x − (4/3)t|), where à is an arbitrary constant. Chen et al [7] gave some smooth periodic wave, smooth solitary wave, periodic cusp wave, and loopsoliton solutions of (1) and made the numerical simulation. He et al [8] studied the following modified FornbergWhitham equation: ut − uxxt + ux + u2ux = uuxxx + 3uxuxx. They investigated the existence of the smooth and nonsmooth traveling wave solutions and gave some analytic expressions of smooth solitary wave, periodic cusp wave, and peakon solutions for (3). Was subjected to experimental and analytical studies They found certain solitary wave solutions which vanish identically outside a finite core region.

Bifurcation Phase Portraits
Numerical Simulation for Bounded Integral Curves
The Expressions of Kink-Like and Compacton-Like Waves
Conclusion
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