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获得了2N+1阶KdV型方程的显式精确孤波解.作为特例,讨论了高阶广义KdV型方程、高阶广义MKdV型方程和高阶广义Schamel的MKdV型方程.还研究了2N+1阶KP型方程
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本文研究了推广的KdV方程 ut+2μuux+v3x+δu5x=0(μvδ≠0) (1)的精确孤子解,得到了(1)式的一些新的孤波解,对文献[10]的若干结论作了补充与修正。
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本文利用广义KP方程的B?cklund变换,获得了含外力项的广义KdV方程ut+6uux+uxxx+6f(t)u=g(t)+x(f′+12f2) (1)的类孤子解。
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In this paper, we study a coupled modified Volterra lattice equation which is an integrable semidiscrete version of the coupled KdV and the coupled mKdV equation. By using the Darboux transformation, we obtain its new explicit solutions including multi-soliton and multi-positon. Furthermore, an integrable discretization of the coupled modified Volterra lattice equation is constructed. 相似文献
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证明了KdV型议程的孤波解和KdV-Burgers型方程的行波解在李亚诺夫意义下是不是稳定的,从而修正了文献中的一些结论。 相似文献
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Solitary wave for a nonintegrable discrete nonlinear Schr?dinger equation in nonlinear optical waveguide arrays 下载免费PDF全文
We study a nonintegrable discrete nonlinear Schr?dinger (dNLS) equation with the term of nonlinear nearest-neighbor interaction occurred in nonlinear optical waveguide arrays. By using discrete Fourier transformation, we obtain numerical approximations of stationary and travelling solitary wave solutions of the nonintegrable dNLS equation. The analysis of stability of stationary solitary waves is performed. It is shown that the nonlinear nearest-neighbor interaction term has great influence on the form of solitary wave. The shape of solitary wave is important in the electric field propagating. If we neglect the nonlinear nearest-neighbor interaction term, much important information in the electric field propagating may be missed. Our numerical simulation also demonstrates the difference of chaos phenomenon between the nonintegrable dNLS equation with nonlinear nearest-neighbor interaction and another nonintegrable dNLS equation without the term. 相似文献
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一类带有非均匀项的广义KdV方程的孤波解朱佐农(扬州大学农学院基础部,扬州225O01)-、引言众所周知,KdV方程已被广泛研究[1].从方程(1)的高阶守恒量出发,Lax得到第一族高阶KdV方程,其5阶形式为:从(2)的守恒量出发,Sawada和K... 相似文献