珊瑚礁冠层水动力学问题研究综述

姚宇; 周宝宝

doi:10.12284/hyxb2024002

珊瑚礁冠层水动力学问题研究综述

doi: 10.12284/hyxb2024002

姚宇^{1, 2,},
周宝宝¹

1.
长沙理工大学水利与环境工程学院，湖南长沙 410114
2.
水沙科学与水灾害防治湖南省重点实验室，湖南长沙 410114

基金项目: 国家重点研发计划项目（2021YFC3100500）；湖南省研究生科研创新项目（CX20220913）。

详细信息

作者简介:
姚宇（1982—），男，湖南省湘潭市人，教授，博士，主要从事珊瑚礁海岸水沙动力学研究。E-mail：yaoyu821101@163.com

中图分类号: P731.2
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- 被引次数: 0
出版历程
- 收稿日期: 2023-04-04
- 修回日期: 2023-08-23
- 网络出版日期: 2023-12-06
- 刊出日期: 2024-01-01

A review of coral reef canopy hydrodynamics

Yao Yu^{1, 2
,},
Zhou Baobao¹

1.
School of Hydraulic and Environmental Engineering, Changsha University of Science & Technology, Changsha 410114, China
2.
Key Laboratory of Water-Sediment Sciences and Water Disaster Prevention of Hunan Province, Changsha 410114, China

摘要

摘要: 珊瑚礁冠层水动力学的研究不仅对维护珊瑚礁生态系统的健康以及生态修复具有指导意义，还能为在台风浪等极端波浪影响下的海岸带防灾减灾提供决策依据，也对预测珊瑚礁上的泥沙输运和珊瑚礁海岸线演变具有重要的参考价值。本文回顾了珊瑚礁冠层水动力学的研究现状，从冠层内外流动特性、冠层阻力特性及冠层阻力的模拟方法3个方面对当前该领域的研究进展进行了系统的综述，并提出未来冠层内外流动特性的研究可关注更复杂的波浪或波流共同作用下的水动力特性，冠层阻力特性应充分考虑冠层骨架结构的各向异性，冠层阻力的模拟可采用直接求解基于Navier-Stokes方程来复现冠层尺度下的精细化流场。
- 冠层流 /
- 阻力系数 /
- 剪切应力 /
- 水动力 /
- 珊瑚礁
Abstract: Study on the coral reef canopy hydrodynamics not only provides guidance for the health of coral reef ecosystem and the ecological restoration project, but also supports the decision-making process for the reef coast hazard prevention and mitigation under extreme wave events such as the typhoons. Meanwhile, it also has significant value for predicting the sediment transport over the reef and the reef coast evolution. This paper reviews the state-of-the-art research on reef canopy hydrodynamics, and systematically summarize the research progress from three aspects: the flows inside and outside of reef canopy, the characteristics of canopy resistance as well as the simulation of canopy resistance. This paper finally proposes the further research directions as follows: future study can focus on the hydrodynamics under more severe wave condition or under combined action of wave and current. It should also fully consider the anisotropy of canopy skeleton. Moreover, it can solve the Navier-Stokes equations directly to reproduce the finer flow field at the canopy scale.
- canopy flow /
- resistance coefficient /
- shear stress /
- hydrodynamics /
- coral reef

HTML全文

图 1 南海某地的珊瑚礁冠层（a）和在南太平洋的岛国瓦努阿图某地的珊瑚礁冠层（b）

Fig. 1 The reef canopy at a reef site in the South China Sea (a) and the reef canopy on Vanuatu, an island country in South Pacific (b)

下载: 全尺寸图片幻灯片

图 2 珊瑚礁礁床边界层流动结构概念模型

图a和图b：单向流作用；图c和图d：波浪作用；图a和图c：光滑床面；图b和图d：粗糙床面^[22]

Fig. 2 A conceptual model of the flow structure in the boundary layer of reef surface

Fig. a and Fig. b: unidirectional flow action; Fig. c and Fig. d: wave action; Fig. a and Fig. c: smooth surface; Fig. b and Fig. d: rough surface^[22]

下载: 全尺寸图片幻灯片

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