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滚波演化中聚合过程的数值模拟研究

陈歆怡 王晓亮 刘青泉 张静

陈歆怡, 王晓亮, 刘青泉, 张静. 滚波演化中聚合过程的数值模拟研究[J]. 力学学报, 2021, 53(5): 1457-1470. doi: 10.6052/0459-1879-20-459
引用本文: 陈歆怡, 王晓亮, 刘青泉, 张静. 滚波演化中聚合过程的数值模拟研究[J]. 力学学报, 2021, 53(5): 1457-1470. doi: 10.6052/0459-1879-20-459
Chen Xinyi, Wang Xiaoliang, Liu Qingquan, Zhang Jing. NUMERICAL STUDY OF COALESCENCE IN ROLL WAVE DEVELOPMENT[J]. Chinese Journal of Theoretical and Applied Mechanics, 2021, 53(5): 1457-1470. doi: 10.6052/0459-1879-20-459
Citation: Chen Xinyi, Wang Xiaoliang, Liu Qingquan, Zhang Jing. NUMERICAL STUDY OF COALESCENCE IN ROLL WAVE DEVELOPMENT[J]. Chinese Journal of Theoretical and Applied Mechanics, 2021, 53(5): 1457-1470. doi: 10.6052/0459-1879-20-459

滚波演化中聚合过程的数值模拟研究

doi: 10.6052/0459-1879-20-459
基金项目: 1)国家自然科学基金(12032005);国家重点研发项目(2018YFC1505504)
详细信息
    作者简介:

    2)王晓亮, 特别副研究员, 主要研究方向: 环境流体力学和颗粒物质力学. E-mail: wangxiaoliang36@bit.edu.cn

    通讯作者:

    王晓亮

  • 中图分类号: O353.2,P333.9,TV133,TV139.2

NUMERICAL STUDY OF COALESCENCE IN ROLL WAVE DEVELOPMENT

  • 摘要: 滚波是一种重力作用下自由液面失稳诱发的水面波动现象, 通常可分为具有相对稳定波形和波速的周期性滚波与波形和波速不断变化的不规则滚波(自然滚波). 不规则滚波的相互作用和发展演化过程十分复杂, 至今对其认识尚不成熟. 本文采用基于雷诺平均Navier-Stokes方程的立面二维数值模型, 对不规则滚波发展过程中的吸收聚合和追赶聚合现象进行了数值模拟研究. 分析了两种聚合模式的演化过程, 给出了滚波聚合过程中完整的波形、波速、速度剖面以及湍流黏性等重要信息. 结果表明滚波的聚合过程是不规则滚波演化和增长的重要机制, 在特定条件下滚波增长由自然增长模式转变为以吸收聚合和追赶聚合为主的增长模式. 滚波聚合过程中, 依次经历后波追赶、爬升、与前波合并、内部流场调制等多个步骤, 最终形成一个具有更大波长和波高的滚波. 本文发现了在3个滚波间距较近的情况下, 会发生二重聚合现象, 即后两个滚波首先聚合, 然后与前波进一步聚合形成一个新的滚波.

     

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出版历程
  • 收稿日期:  2020-12-31
  • 刊出日期:  2021-05-18

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