摘要
以SWAN为例,在极值风况下,分别研究白帽耗散、底摩阻、波浪破碎、潮位等物理过程对波浪谱数值模型模拟的波浪场影响。计算结果表明:潮位对近岸极值波浪模拟影响明显,深水时底摩阻对波浪场响应程度较低,波浪场在深水区对白帽耗散效应的响应程度明显大于浅水区,水深诱导的波浪破碎是近海波浪场模拟影响最为显著的参数。东店渔港附近海域4个特征点波浪设计要素的模型计算值和推算值相对误差最大为4.24%,表明SWAN模型在计算近岸某点的波浪设计要素方面具有较高的精度。
Taking SWAN as an example,the effects of physical processes such as white cap dissipation,bottom friction,wave breaking and tidal level on wave field simulated by wave spectrum numerical model were studied under extreme wind conditions.Calculated results show that tidal level has obvious influence on nearshore extreme wave simulation,the bottom friction has a low response to the wave field in deep water,the response of the wave field to the dissipation effect of white cap in deep water was significantly greater than that of shallow water,and wave breakage induced by water depth was the most significant parameter affecting the simulation of offshore wave field.The maximum relative error between the simulated value and calculated value of the wave design elements on the four characteristic points near Dongdian fishing port was only 4.24%,which indicates that the SWAN model has a high accuracy in calculating the wave design elements of a point near the shore.
作者
姬厚德
蓝尹余
涂振顺
林毅辉
肖征
JI Hou-de;LAN Yin-yu;TU Zhen-shun;LIN Yi-hui;XIAO Zheng(Fujian Institute of Oceanography,Xiamen,Fujian 361013,China;Fujian Provincial Key Laboratory of Coast and Island Management Technology Study,Xiamen,Fujian 361013,China;College of Ocean&Earth Sciences,Xiamen University,Xiamen,Fujian 361102,China)
出处
《中国港湾建设》
2021年第8期1-5,共5页
China Harbour Engineering
基金
福建省公益类科研院所专项基金(2020R1006001,2018R1006-4)
国家重点研发计划资助项目(2017YFC1404801)。
