Wave Structures and Nonlinear Balances in a Family of 1+1 Evolutionary PDEs

Details Wave Structures and Nonlinear Balances in a Family of 1+1 Evolutionary PDEs Wave Structures and Nonlinear Balances in a Family of 1+1 Evolutionary PDEs

2002-02-26

arxiv.org/abs/nlin/0202059v1

Nonlinear Sciences

Chaotic Dynamics

69 pages, 26 figures

Scientific paper

10.1137/S1111111102410943

We study the following family of evolutionary 1+1 PDEs that describe the balance between convection and stretching for small viscosity in the dynamics of 1D nonlinear waves in fluids: \[ m_t + \underbrace{um_x \} _{(-2mm)\hbox{convection}(-2mm)} + \underbrace{b u_xm \} _{(-2mm)\hbox{stretching}(-2mm)} = \underbrace{\nu m_{xx}\ }_{(-2mm)\hbox{viscosity}}, \quad\hbox{with}\quad u=g*m . \] Here $u=g*m$ denotes $ u(x)=\int_{-\infty}^\infty g(x-y)m(y) dy . $ We study exchanges of stability in the dynamics of solitons, peakons, ramps/cliffs, leftons, stationary solutions and other solitary wave solutions associated with this equation under changes in the nonlinear balance parameter $b$.

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