结合椭圆型缓坡方程模拟近岸波流场

唐军; 沈永明; 郑永红; 邱大洪

结合椭圆型缓坡方程模拟近岸波流场

1.
大连理工大学海岸和近海工程国家重点实验室, 辽宁大连 116023
2.
中国科学院广州能源研究, 广东广州 510640

基金项目: 国家自然科学基金资助项目(10332050;50579005);辽宁省自然科学基金资助项目(20042153)

计量
- 文章访问数: 772
- HTML全文浏览量: 13
- PDF下载量: 1189
- 被引次数: 0
出版历程
- 收稿日期: 2005-03-12
- 修回日期: 2005-06-30

The numerical simulation of nearshore current combined with the elliptic mild-slope equation

1.
State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116023, China
2.
Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China

摘要

摘要: 波浪向近岸传播的过程中,由波浪破碎效应所产生的近岸波流场是近岸海域关键的水动力学因素之一.结合近岸波浪场的椭圆型缓坡方程和近岸波流场数学模型对近岸波浪场及由斜向入射波浪破碎后所形成的近岸波流场进行了数值模拟.计算中考虑到波浪向近岸传播中由于波浪的折射、绕射、反射等效应使局部复杂区域波向不易确定,采用结合椭圆型缓坡方程所给出的波浪辐射应力公式来计算波浪产生的辐射应力,在此基础上耦合椭圆型缓坡方程和近岸波流场数学模型对近岸波流场进行数值模拟,从而使模型综合考虑了波浪的折射、绕射、反射等效应且避免了对波向角的直接求解,可以应用于相对较复杂区域的近岸波流场模拟.
- 椭圆型缓坡方程 /
- 波浪破碎 /
- 辐射应力 /
- 近岸流
Abstract: The nearshore current generated by the breaking of water waves when the waves propagate to the shore is one of the most important hydrodynamic factors in coastal zones.The wave and longshore current field have been numerically simulated based on the elliptic mild-slope equation and wave-current model.As the wave direction is hard to be defined due to the refraction,diffraction and reflection of waves in some local complicated regions,the wave radiation stresses have been calculated combining with the elliptic mild-slope equation which accounts for the refraction,diffraction and reflection of waves and in which the wave ang les have not been involved,and the nearshore wave current field has been numerically simulated based on these,which has made the numerical model can be widely used in complicated coastal regions.
- elliptic mild-slope equation /
- wave breaking /
- radiation stress /
- near shore current

HTML全文

参考文献(13)

LONGUET-HIGGINS M S,STEWART R W.Radiation stress mass transport in gravity waves,with appplications to surf beats[J].Journal of Fluid Mechanics,1962,13:481-504

LONGUET-HIGGINS M S,STEWAT R W.Radiation stress in water waves:a physical discussion with applications[J].Deep-Sea Research,1964,31:529-562.

LONGUET-HIGGINS M S.Longshore currents generated by obliquely incident sea waves:Ⅰ[J].Journal of Geophysical Research,1970,75(31):6 778-6 789.

LONGUET-HIGGINS M S.Longshore currents generated by obliquely incident sea waves:Ⅱ[J].Journal of Geophysical Research,1970,75(33):6 790-6 801.

NIELSEN C,APELT C.The application of wave induced forces to a two-dimensional finite element long wave hydrodynamic model[J].Ocean Engineering,2003,30:1 233-1 251.

郑永红,沈永明,邱大洪.结合抛物型缓坡方程计算波浪辐射应力[J].海洋学报,2002,6:110-116.

包四林,西村仁嗣.近岸波生流数值计算的一种新方法[J].海洋学报,2000,22(5):115-123.

孙涛,陶建华.波浪作用下近岸区污染物输移扩散的数学模型及其实验验证[J].海洋学报,2003,25(3):104-112.

BERKHOFF J C W.Computation of combined refraction-diffraction[A].Proceeding of the 13th Conference on Coastal Engineering:Vol.1[C].Vancouver:ASCE,1972.471-490.

DALLY W R,DEAN R G,DALRYMPLE R A.Wave height verification across beaches of arbitrary profile[J].Journal of Geophysical Research,1985,90(C6):11 917-11 927.

MEI C C.A note on the averaged momentum balance in two-dimensional water waves[J].Journal of Marine Research,1973,31(2):97-104.

BETTESS P,BETTESS J.A generalization of the radiation stress tensor[J].Applied Mathematical Modeling,1982,6:146-150.

王淑平.沿岸流的研究[D].大连:大连理工大学,2001.

施引文献

资源附件(0)

访问统计

点击查看大图

计量

文章访问数: 772
HTML全文浏览量: 13
PDF下载量: 1189
被引次数: 0

姓名
邮箱
手机号码
标题
留言内容
验证码

留言板