The tanh method .2. Perturbation technique for conservative systems

被引:282
作者
Malfliet, W [1 ]
Hereman, W [1 ]
机构
[1] COLORADO SCH MINES,DEPT MATH & COMP SCI,GOLDEN,CO 80401
来源
PHYSICA SCRIPTA | 1996年 / 54卷 / 06期
关键词
D O I
10.1088/0031-8949/54/6/004
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
With the aid of the tanh method, nonlinear wave equations are solved in a perturbative way. First, the KdVBurgers equation is investigated in the limit of weak dispersion. As a result, a general shock wave profile, with a perturbative solitary-wave contribution superposed, emerges. For a particular choice of the parameters, a comparison with the exact solution is made. Further, the MKdVBurgers is investigated in the same limit and similar results are obtained.
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页码:569 / 575
页数:7
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