上海大学学报(自然科学版) ›› 2009, Vol. 15 ›› Issue (6): 607-610.

• 数理化科学 • 上一篇    下一篇

三阶表面张力-重力短峰波理论

黄虎   

  1. (上海大学 上海市应用数学和力学研究所,上海 200072)
  • 收稿日期:2009-04-15 出版日期:2009-12-28 发布日期:2009-12-28
  • 通讯作者: 黄虎(1964~),男,教授,博士生导师,研究方向为地球物理流体动力学和Hamilton流体动力学. Email:hhuang@shu.edu.cn
  • 作者简介:黄虎(1964~),男,教授,博士生导师,研究方向为地球物理流体动力学和Hamilton流体动力学. Email:hhuang@shu.edu.cn
  • 基金资助:

    全国优秀博士学位论文作者专项资金资助项目(200428);上海市教委科研创新基金资助项目(08YZ05)

Third-Order Theory for Surface Capillary-Gravity Short Crested Waves

HUANG Hu   

  1. (Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University, Shanghai 200072, China)
  • Received:2009-04-15 Online:2009-12-28 Published:2009-12-28

摘要:

考虑作用于表面波上的丰富表面张力效应,构造有限水深表面张力重力短峰波系统,提出其解的唯一性条件,并获得其三阶解析解.据此,给出一系列与近海、海洋工程密切相关的运动学、动力学变量表达式:自由表面位移、速度势、角频率、波陡、相速度、水质点速度和加速度、波压力.并且发现,三阶角频率的零点、极点直接关系到谐波共振.

关键词: 短峰波;表面张力;三阶解;谐波共振

Abstract:

Considering the rich capillary effects on surface waves, a system for surface capillary-gravity shortcrested waves is developed. The unique solution condition is given, and the thirdorder solution obtained, leading to expressions for a series of kinematic and dynamic variables closely related to coastal and ocean engineering. These expressions deal with surface elevation, velocity potential, angular frequency, wave steepness, phase velocity, wave-particle velocities and accelerations, and wave pressure. It is found that locations of zeros and poles of the thirdorder angular frequency directly correspond to the harmonic resonances.

Key words:  short-crested wave; capillary effect; third-order solution; harmonic resonance

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