摘要:
研究了一类扰动Vakhnemko方程.给出了改进的渐近方法.首先,对原模型系统对应的典型方程得到对应的行波解.其次,引入一个泛函,建立迭代关系式,将求解非线性问题转化为求解一系列的迭代序列.然后,逐次地求出对应的解的近似式,最后,得到了原扰动Vakhnemko模型行波解的任意次精度的近似展开式,并讨论了它的精度.
Abstract:
A kind of disturbed Vakhnemko equation is considered. The modified asymptotic method is given. Firstly, we obtain corresponding traveling wave solution of the typical Vakhnemko equation. Secondly, introducing a functional, constructing the iteration expansion of solution, the nonlinear equation is converted into a set of iteration sequence. And then, the corresponding approximations of solution are solved successively. Finally, the approximate expansion for arbitrary order accuracy of the travelling wave solution for the original disturbed Vakhnemko model is obtained and its accuracy is discussed.
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