Two-phase flow simulation of breaking solitary waves over surface-piercing and submerged conical structures
Two-phase flow simulation of breaking solitary waves over surface-piercing and submerged conical structures
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DOI：
10.1016/j.oceaneng.2020.107679
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发表时间：
2020-10
影响因子：
5
通讯作者：
Zhihua Xie;T. Stoesser
中科院分区：
文献类型：
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作者：
Zhihua Xie;T. Stoesser
采用两相流模型研究了三维孤立波在穿透水面和淹没锥形结构物上的破碎。波浪破碎前、翻转和破碎后过程的细节也包括在内。控制方程采用有限体积法离散，压力-速度耦合采用PISO算法。空气-水界面的捕获使用的体积的流体的方法和笛卡尔切割细胞的方法来处理复杂的地形的锥形结构。首先利用已有的穿透表面的锥形岛上传播的孤立波的实验数据对该方法进行了验证，得到了实验与模拟数据之间的良好一致性。然后，该模型被应用于研究三维破碎波淹没圆锥形结构，三维波的轮廓和表面速度被提出和讨论。给出了波浪破碎过程中的三维速度场、能量耗散和转化。
A two-phase flow model is employed to study three-dimensional (3D) breaking of solitary waves over surface-piercing and submerged conical structures. Details of the wave pre-breaking, overturning, and post-breaking processes are included. The governing equations are discretized by the finite volume method and the PISO algorithm is utilized for the pressure-velocity coupling. The air–water interface is captured using a volume of fluid approach and the Cartesian cut-cell method is implemented to deal with the complex topography of the conical structures. The method is validated first using available experimental data of a solitary wave propagating over a surface-piercing conical island and good agreement between the experiment and simulation data is obtained. The model is then applied to study 3D breaking waves over a submerged conical structure, with 3D wave profiles and surface velocities being presented and discussed. The detailed 3D velocity fields, energy dissipation and transformation during the wave breaking process are presented.