福建海坛湾波流双向耦合下水动力特征

发布时间：2018-05-07 14:56

本文选题：海坛湾 + 波浪　；参考：《同济大学学报(自然科学版)》2016年08期

【摘要】：采用MIKE 21软件中SW(spectral wave)波浪模块和FM(flow model)潮流模块,将潮流模块计算得到的水位与流速输入波浪模型,将波浪模块计算得到的辐射应力输入潮流模型,建立海坛湾波流双向耦合的水动力数学模型.分别计算纯潮流和纯波浪作用下的潮流场和波浪场,计算结果与实测数据吻合良好,再分别对波流双向耦合作用下的潮流场和波浪场进行了模拟.比较结果表明:波流耦合作用对流速和波高都有一定的影响;在波流异向特性明显的区域,波高增大显著;涨落急时刻波高在近岸区域的衰减速率和纯波浪作用下的较一致;落急时刻波高开始显著衰减的位置明显早于涨急时刻;波浪辐射应力在破碎带附近对流速的影响最大.
[Abstract]:Using the SW(spectral wave module and the FM(flow model module in MIKE 21 software, the water level and velocity input wave model is calculated by the tidal current module, and the radiation stress of the wave module is input into the tidal current model. A hydrodynamic mathematical model of two-way coupling of waves and currents in Haitan Bay is established. The tidal current field and wave field under pure tidal current and pure wave action are calculated respectively. The calculated results are in good agreement with the measured data, and the tidal current field and wave field under the bidirectional coupling of wave and current are simulated respectively. The results show that the coupling of wave and current has a certain influence on velocity and wave height, the wave height increases significantly in the region with obvious anomalous characteristics of wave and current, and the attenuation rate of wave height in the coastal region is consistent with that of pure wave. The position at which the wave height begins to attenuate obviously is earlier than that at the rising moment, and the wave radiation stress has the greatest influence on the velocity of velocity near the broken zone.
【作者单位】：同济大学土木工程学院;广西交通职业技术学院;上海海洋大学海洋科学学院;国家海洋局第三海洋研究所;
【分类号】：P731.2

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