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热带海洋学报 ›› 2015, Vol. 34 ›› Issue (4): 31-36.doi: 10.11978/j.issn.1009-5470.2015.04.004CSTR: 32234.14.j.issn.1009-5470.2015.04.004

• 海洋水文学 • 上一篇    下一篇

两层流体中三类内孤立波数值造波方法比较研究

方舟1, 2, 严圣甫3, 王旭1   

  1. 1. 上海交通大学, 上海 200240;
    2. 嘉兴南洋职业技术学院, 浙江 嘉兴 314003;
    3. 中国科学院南海海洋研究所, 广东 广州 510301
  • 收稿日期:2014-07-23 出版日期:2015-08-10 发布日期:2015-08-21
  • 作者简介:方舟(1983~), 男, 浙江省嘉兴市人, 工程师, 硕士, 主要从事海洋工程水动力学研究。E-mail: fangzhou@mail.ioa.ac.cn
  • 基金资助:
    国家自然科学基金项目(40976063); 国际科技合作项目(2010DFA91350)

Comparative study of three wave-generating methods for internal solitary waves in a two-layer fluid

FANG Zhou1, 2, YAN Sheng-fu3, WANG Xu1   

  1. 1. Shanghai Jiao Tong University, Shanghai 200240, China;
    2. School of Jiaxing Nanyang Profession and Technology, Jiaxing 314003, China;
    3. South China Sea Institute of Oceanography, Chinese Academy of Sciences, Guangzhou 510301, China
  • Received:2014-07-23 Online:2015-08-10 Published:2015-08-21

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摘要： 以3类内孤立波理论(Korteweg-de Vries、 extended KdV和 Miyata-Choi-Camassa)的适用性条件为依据, 在有限水深两层流体中分别构建了双推板、速度入口、质量源3类内孤立波数值造波模型。通过系列数值模拟, 对3类方法的数值造波效果和效率进行了比较。计算结果表明, 3类数值造波方法均能生成内孤立波; 数值造波效果方面, 速度入口、质量源两类方法均优于双推板方法; 数值造波效率方面, 速度入口方法效率最高, 质量源方法其次, 而双推板方法效率最低。

关键词: 内孤立波, 造波模型, 数值模拟

Abstract: According to the applicability conditions for three types of internal solitary wave theories including Korteweg-de Vries, extended KdV and Miyata-Choi-Camassa, the double push-pedals wave-generating method, the velocity-inlet wave-generating method and the mass source wave-generating method were developed y in a two-layer fluid of finite depth. Series of numerical simulations were presented to compare the results and efficiency of the three wave-generating methods. Results showed that even though all three methods can generate internal solitary waves, the velocity-inlet method and the mass source method were better than the double push-pedals method in terms of numerical simulations. The efficiency of simulation was the highest for the velocity-inlet method, followed by the mass source method, and the lowest for the double push-pedals method.

Key words: Internal solitary wave, Wave-generating method, Numerical simulation