›› 2015, Vol. 24 ›› Issue (1): 10203-010203.doi: 10.1088/1674-1056/24/1/010203
刘希忠a, 俞军a, 任博a, 杨建荣b
Liu Xi-Zhong (刘希忠)a, Yu Jun (俞军)a, Ren Bo (任博)a, Yang Jian-Rong (杨建荣)b
摘要: In nonlinear physics, it is very difficult to study interactions among different types of nonlinear waves. In this paper, the nonlocal symmetry related to the truncated Painlevé expansion of the (2+1)-dimensional Burgers equation is localized after introducing multiple new variables to extend the original equation into a new system. Then the corresponding group invariant solutions are found, from which interaction solutions among different types of nonlinear waves can be found. Furthermore, the Burgers equation is also studied by using the generalized tanh expansion method and a new Bäcklund transformation (BT) is obtained. From this BT, novel interactive solutions among different nonlinear excitations are found.
中图分类号: (Partial differential equations)