淤泥质海岸波生沿岸流特性研究  

Movement performance of wave-induced alongshore current on muddy coast

作　　者：张玮[1] 许才广[1] 钱伟[2] 

机构地区：[1]河海大学港口海岸与近海工程学院,江苏南京210098 [2]江苏省交通科学研究院股份有限公司,江苏南京210017

出　　处：《中国港湾建设》2015年第3期1-8,共8页China Harbour Engineering

基　　金：国家高技术研究发展计划(863计划)(2012AA112509)

摘　　要：淤泥质海岸波生流数值模拟缺乏有效验证数据和手段。为此,提出一种模型相互比对的验证方法,基于两种模型平台,引入三维波生流理论,经验证后开展地形坡度及波浪要素对于波生沿岸流的影响研究。研究结果表明:所建议的模型相互比对验证方法,可以有效弥补淤泥质海岸波生流实测资料匮乏的不足;淤泥质海岸波生沿岸流流速相对较小,但仍可达到潮流量级。随着岸滩坡度趋缓,波生流范围逐渐扩展,沿岸流流速相应变小;随着入射波高的增加,波生沿岸流的强度和影响范围逐渐增大;当波浪入射角度为45°时,波生沿岸流流速最大。Due to the lack of effective validation data and methods in the numerical simulation of wave-induced current on the muddy coast, we proposed a validation method called model inter-comparison. Based on two kinds of model, we incorporated three-dimensional wave-induced current movement equations, and carried out the research on the influence of beach slope and wave factors on wave-induced alongshore current after validating the model. The results show that the recommended method can effectively make up for the lack of the measured data, and that although the velocity of wave-induced current on the muddy coast is relatively small, it can still reach similar magnitude compared to the tidal current. As the slope turns flatter, the distribution range of alongshore current becomes wider and the velocity distribution is smoother. Also, the speed and the influence scope of alongshore current increased with the increment of incident wave height, and the velocity of alongshore current will reach its maximum when the incident wave angle is 45 degrees.

关 键 词：淤泥质海岸 波生沿岸流 模型验证 敏感性分析 

分 类 号：U652.3[交通运输工程—港口、海岸及近海工程] P332.4[交通运输工程—船舶与海洋工程]