摘要
为了更好地研究近岸海域波生沿岸流,建立了基于高阶Boussinesq水波方程的波生沿岸流时域数值模型。控制方程在中等水深范围内具有较好的色散性和变浅作用性能,同时具有二阶完全非线性特征,适合描述近岸区域波浪强非线性运动。通过采用松弛造波方法实现了非线性波浪的无反射入射,采用周期性侧边界条件模拟开敞边界。通过数值试验,讨论了模型中主要参数对数值结果的影响。利用率定后的参数模拟了均匀坡度海岸上产生的沿岸流,通过和实验数据的对比验证了模型的准确性和适用性。利用模型数值模拟了不同波浪入射条件(包括周期、波高和波浪入射角度)对波生沿岸流的影响。
To better understand the wave-induced longshore currents in nearshore region, a numerical model is devel- oped based on the second order fully nonlinear Boussinesq equations. The governing equations possess optimum linear properties and second order fully nonlinearity characteristics in medium water depths. The relaxation zone method is used to generate non-reflective and higher-order nonlinear waves, and the periodic lateral boundary conditions are im- posed to mimic open sea boundaries. Utilizing the developed model, the effect of involved parameter values on the nu- merical results are investigated by conducting numerical experiments. Good agreements between numerical results and experimental data demonstrate the accuracy and applicability of the model. The effects of different wave conditions on longshore currents are also investigated numerically.
出处
《水科学进展》
EI
CAS
CSCD
北大核心
2013年第2期258-265,共8页
Advances in Water Science
基金
国家自然科学基金资助项目(51009018)
国家海洋局海域管理技术重点实验室资助项目(201206)~~
作者简介
作者简介：房克照（1980-），男，山东日照人，讲师，博士，主要从事海岸动力学方面研究。E-mail：kfang@dlut．edu．cn
