摘要
该文基于非静压单相流模型(NHWAVE),对多向聚焦波在近岸岛礁地形上的传播和爬坡过程进行了数值模拟,综合考虑了有效波高、谱峰周期、水深、波浪入射角度以及岛礁前坡坡度和后坡坡度等因素对岸礁波浪水动力特性的影响,重点分析了最大波高的沿礁变化及岸线附近最大爬高的变化规律。计算结果表明:有效波高、谱峰周期、水深及波浪入射角度对波群的传播有显著的影响;随着有效波高、谱峰周期及水深的增大,波群在后坡上的爬高也随之增大。随着波浪入射角的增大,波群在后坡上的爬高随之减小;当改变礁前斜坡坡度时波群在后坡上的爬高几乎不变,仅对礁前斜坡处的局部波高有影响;当增大礁后斜坡坡度时波浪在岸滩上的最大爬高随之增大,但对波浪在岸礁上的传播变形影响很小。该研究结果接近真实海况,可以为工程实际提供更可靠的依据。
In this paper,based on the non-hydrostatic single-phase wave model(NHWAVE),the propagation and runup process of multidirectional focused waves on near-shore island reef terrain is numerically simulated.The effects of significant wave height,spectrum peak period,water depth,wave incidence angle and the front slope and back slope of the island reef on the wave hydrodynamic characteristics of the fringing reef are comprehensively considered,focusing on the variation of local wave height along the reef and the maximum runup height near the shoreline.The results of the calculations show that the significant wave height,spectrum period,water depth and wave incidence angle have significant effects on the propagation of the wave group.As the wave height,spectrum period and water depth increase,the runup of the wave group on the back slope also increases.As the angle of incidence of the wave increases,the runup height on the back slope decreases.When the slope of the reef front is changed,the runup height on the back slope remains almost the same,but only affects the local wave height on the reef front slope.When the slope of the reef back is increased,the maximum runup height on the shore increases,but has little effect on the deformation of the wave propagation on the fringing reef.The results of this study are close to the real sea conditions and can provide a more reliable basis for engineering practice.
作者
门佳
屈科
王旭
Men Jia;Qu Ke;Wang Xu(School of Hydraulic and Environmental Engineering,Changsha University of Science&Technology,Changsha 410114,China;Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province,Changsha 410114,China;Key Laboratory of Water-Sediment Sciences and Water Disaster Prevention of Hunan Province,Changsha 410114,China)
出处
《水动力学研究与进展（A辑）》
CSCD
北大核心
2023年第3期482-494,共13页
Chinese Journal of Hydrodynamics
基金
国家重点研发计划课题(2022YFC3103601)
国家自然科学基金重点项目(51839002)
湖南省自然科学优秀青年基金项目(2021JJ20043)。
关键词
多向聚焦波
岛礁地形
NHWAVE
最大波高
最大爬高
Multi-directional focused waves
Reef topography
NHWAVE
Maximum wave height
Maximum runup height
作者简介
门佳(1998-),女,硕士研究生;屈科,E-mail:kqu@csust.edu.cn。
