中国物理B ›› 2017, Vol. 26 ›› Issue (5): 54501-054501.doi: 10.1088/1674-1056/26/5/054501

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Fully nonlinear (2+1)-dimensional displacement shallow water wave equation

Feng Wu(吴锋), Zheng Yao(姚征), Wanxie Zhong(钟万勰)   

  1. 1 State Key Laboratory of Structural Analysis of Industrial Equipment, Faculty of Vehicle Engineering and Mechanics, Dalian University of Technology, Dalian 116023, China;
    2 Transportation Equipments and Ocean Engineering College, Dalian Maritime University, Dalian 116026, China
  • 收稿日期:2016-11-04 修回日期:2016-12-20 出版日期:2017-05-05 发布日期:2017-05-05
  • 通讯作者: Zheng Yao E-mail:yaozheng@dlmu.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11272076 and 51609034) and China Postdoctoral Science Foundation (Grant No. 2016M590219).

Fully nonlinear (2+1)-dimensional displacement shallow water wave equation

Feng Wu(吴锋)1, Zheng Yao(姚征)2, Wanxie Zhong(钟万勰)1   

  1. 1 State Key Laboratory of Structural Analysis of Industrial Equipment, Faculty of Vehicle Engineering and Mechanics, Dalian University of Technology, Dalian 116023, China;
    2 Transportation Equipments and Ocean Engineering College, Dalian Maritime University, Dalian 116026, China
  • Received:2016-11-04 Revised:2016-12-20 Online:2017-05-05 Published:2017-05-05
  • Contact: Zheng Yao E-mail:yaozheng@dlmu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11272076 and 51609034) and China Postdoctoral Science Foundation (Grant No. 2016M590219).

摘要: Recently, a new (2+1)-dimensional displacement shallow water wave equation (2DDSWWE) was constructed by applying the variational principle of analytic mechanics in the Lagrange coordinates. However, the simplification of the nonlinear term related to the incompressibility of the shallow water in the 2DDSWWE is a disadvantage of this approach. Applying the theory of nonlinear continuum mechanics, we add some new nonlinear terms to the 2DDSWWE and construct a new fully nonlinear (2+1)-dimensional displacement shallow water wave equation (FN2DDSWWE). The presented FN2DDSWWE contains all nonlinear terms related to the incompressibility of shallow water. The exact travelling-wave solution of the proposed FN2DDSWWE is also obtained, and the solitary-wave solution can be deduced from the presented travelling-wave solution under a special selection of integral constants.

关键词: shallow water system, Hamilton variational principle, displacement, solitary wave

Abstract: Recently, a new (2+1)-dimensional displacement shallow water wave equation (2DDSWWE) was constructed by applying the variational principle of analytic mechanics in the Lagrange coordinates. However, the simplification of the nonlinear term related to the incompressibility of the shallow water in the 2DDSWWE is a disadvantage of this approach. Applying the theory of nonlinear continuum mechanics, we add some new nonlinear terms to the 2DDSWWE and construct a new fully nonlinear (2+1)-dimensional displacement shallow water wave equation (FN2DDSWWE). The presented FN2DDSWWE contains all nonlinear terms related to the incompressibility of shallow water. The exact travelling-wave solution of the proposed FN2DDSWWE is also obtained, and the solitary-wave solution can be deduced from the presented travelling-wave solution under a special selection of integral constants.

Key words: shallow water system, Hamilton variational principle, displacement, solitary wave

中图分类号:  (Lagrangian and Hamiltonian mechanics)

  • 45.20.Jj
94.05.Fg (Solitons and solitary waves) 95.30.Lz (Hydrodynamics) 47.10.-g (General theory in fluid dynamics)