检索
E-mail
RSS

作者投稿 主编审稿 专家审稿 远程编辑

热带海洋学报

• • 上一篇    

类海啸波复杂珊瑚礁水动力特性三维数值模拟研究

张泽1, 屈科1, 2, 3, 王傲宇1, 李玮1, 王超1   

  1. 1.长沙理工大学, 水利与海洋工程学院, 湖南 长沙 410114;

    2.洞庭湖水环境治理与生态修复湖南省重点试验室, 湖南 长沙 410114;

    3.水沙科学与水灾害防治湖南省重点试验室, 湖南 长沙 410114




  • 收稿日期:2025-07-01 修回日期:2025-10-26 接受日期:2025-11-05
  • 通讯作者: 屈科
  • 基金资助:
    国家重点研发计划课题(2022-36)

Three-dimensional numerical investigation of hydrodynamic characteristics over complex coral reefs with tsunami-like waves

ZHANG Ze1, QU Ke1, 2, 3, WANG Aoyu1, LI Wei1, WANG Chao1    

  1. 1.School of Hydraulic and Ocean Engineering, Changsha University of Science & Technology, Changsha 410004, China;


    2. School of Ocean Engineering, Changsha University of Science & Technology, Changsha 41000, China;

    3. Key Laboratory of Water-Sediment Sciences and Water Disaster Prevention of Hunan Province, Changsha 410114, China

  • Received:2025-07-01 Revised:2025-10-26 Accepted:2025-11-05
  • Supported by:
    National Key Research and Development Program of China(2022-36)

PDF (PC)

赞

摘要： 珊瑚礁作为天然的海岸屏障, 凭借其复杂的结构和独特的物理特性, 在消波防浪, 减轻海岸侵蚀方面发挥重要作用, 相关研究日益受到学界广泛关注。然而, 现有研究多采用二维断面斜坡-台阶地形来概化珊瑚礁地形进行数值模型, 这与实际珊瑚礁的复杂地貌特征存在显著差异。本研究通过实地观测大量珊瑚礁地形发现, 礁坪表面普遍存在非平整特性, 这影响类海啸波在珊瑚礁区域的传播演变过程。为此, 本研究决定采用FUNWAVE-TVD模型建立高精度数值水槽, 系统研究了不同入射波高和水深条件下类海啸波的传播特征。结果表明: 1)礁坪的非平整特性会导致类海啸波在传播至凸起礁坪区域时产生壅水现象。在波浪绕射作用下, 大量水体聚集在凸起与非凸起区域的过渡带, 形成明显的波面抬升。在波流耦合作用下, 这一抬升波幅在向前传播的同时, 还会向礁坪凸起方向移动。2)当波浪穿过凸起部分的末端并在泻湖传播的过程中, 在壅水以及波流的作用下, 其波高会在一定时间内保持上升趋势, 然后迅速下降。这些研究成果为珊瑚礁防护和可持续开发利用提供了重要的理论依据和技术支持。

关键词: FUNWAVE-TVD, 类海啸波, 复杂岛礁, 水动力特性, 三维数值模型

Abstract: Coral reefs, as natural coastal barriers, play a significant role in wave dissipation and prevention, as well as in mitigating coastal erosion, thanks to their complex structure and unique physical properties. Related research has increasingly attracted extensive attention from the academic community. However, most existing studies adopt two-dimensional cross-section slope-step topography to generalize coral reef topography for numerical models, which is significantly different from the complex geomorphic features of actual coral reefs. This study, through on-site observation of a large number of coral reef landforms, found that the surface of the reef plateau generally has non-flat characteristics, which affects the propagation and evolution process of tsunami-like waves in coral reef areas. For this purpose, this study decided to adopt the FUNWAVE-TVD model to establish a high-precision numerical water tank and systematically investigate the propagation characteristics of tsunami-like waves under different incident wave heights and initial water depths. The results show that: 1) The unevenness of the reef flat can cause water backflow when tsunami-like waves propagate to the protruding reef flat area. Under the effect of wave diffraction, a large amount of water accumulates in the transition zone between the raised and non-raised areas, forming a distinct wave surface uplift. Under the effect of wave-current coupling, this uplifting amplitude not only propagates forward but also moves towards the protrusion of the reef platform. 2) When waves pass through the end of the raised part and propagate in the lagoon, under the influence of water backflow and wave current, their wave height will maintain an upward trend for a certain period of time and then drop rapidly. These research achievements provide important theoretical basis and technical support for the protection and sustainable development and utilization of coral reefs.

Key words: FUNWAVE-TVD, solitary wave, complex island reefs, hydrodynamic characteristics, Three-dimensional numerical simulation