近岸沿岸流及污染物运动的数值模拟

唐军; 沈永明; 邱大洪

近岸沿岸流及污染物运动的数值模拟

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

基金项目: “973”国家重点基础研究发展计划资助项目(2005CB724202);国家自然科学基金资助项目(50709004,50779006);海洋工程国家重点实验室研究基金资助课题

计量
- 文章访问数: 953
- HTML全文浏览量: 8
- PDF下载量: 1002
- 被引次数: 0
出版历程
- 收稿日期: 2006-04-02
- 修回日期: 2007-06-12

Numerical simulation of longshore currents and pollutant movement in waves and currents in coastal zone

State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116023, China

摘要

摘要: 基于双曲型缓坡方程和近岸浅水方程对近岸波浪斜向入射破碎所生成的沿岸流及污染物在沿岸波流作用下的运动进行了数值模拟,并对数值模拟结果进行了验证分析。数值模拟结果表明,在相近工况参数下,随着入射波高的增大,沿岸流流速和平均水面升高值均明显增大;随着岸坡坡度的增加,沿岸流流速和平均水面升高值明显增大;随着入射波浪周期的增大,平均水面升高值明显增大。在沿岸缓坡区域,由斜向入射波浪破碎所产生的沿岸流对污染物的运动起着不可忽略的影响。
- 双曲型缓坡方程 /
- 破碎波 /
- 沿岸流 /
- 污染物
Abstract: Waves, breaking-wave-induced long shore currents and pollutant movement in waves and currents have been numerically simulated based on the hyper bolic mild-slope equation, the shallow water equation and the pollutant movement equation, and the comparison between the numerical and experimental results have also been made.The numerical results show that the longshore current velocity and wave set-up increase with the increase of the incident wave amplitude and off shore slope gradient; the wave set-up increases with the increase of the incident wave period.In a mild-slope coastal zone, the longshore currents induced by the inclined incident waves have important influence on longshore pollutant movement.
- hyper bolic mild-slope equation /
- breaking-wave /
- longshore currents /
- pollutants

HTML全文

参考文献(13)

BERKHOFF J C W.Computation of combined refraction-diffraction[C]//Proceeding of the 13th Conference on Coastal Engineering:Vol.1.Vancouver:ASCE,1972:471-490.

MADSEN P A,LARSEB J.An efficient finite-difference approach to the mild-slope equation[J].Coastal Engineering,1987,11:329-351.

LONGUET-HIGGINS M S.Longshore currents generated by obliquely incident sea waves:1[J].Journal of Geophysical Research,1970,75:6778-6789.

LONGUET-HIGGINS M S.Longshore currents generated by obliquely incident sea waves:2[J].Journal of Geophysical Research,1970,75:6 790-6 801.

陶建华,韩光.波浪对浅海近岸污染物输移扩散规律的影响[J].中国科学(E).2003,33(11):1045-1056.

唐军,沈永明,郑永红,等.结合椭圆型缓坡方程模拟近岸波流场[J].海洋学报,2006,28:146-151.

包四林,西村仁嗣,陈沈良.人工岛周围的波生流计算方法[J].海洋学报,2006,28:140-145.

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,2002,24:110-116.

KATOPODI I,RIBBERINK J S.Quasi-3D modeling of suspended sediment transport by currents and waves[J].Coastal Engineering,1992,18:83-110.

FALCONER R A.Water quality simulation study of a natural harbor[J].Journal of Waterway,Port,Coastal,and Ocean Engineering,1986,112(1):15-33.

FISCHER H B.Longitudinal dispersion and turbulent mixing in open channel flow[J].Annual Review of Fluid Mechanics,1978,5:59-78.

VAN-RIJIN L C.Sedimentation of dredged channels by currents and waves[J].Journal of Waterway,Port,Coastal,and Ocean Engineering,1986,112(5):541-559.

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

计量

文章访问数: 953
HTML全文浏览量: 8
PDF下载量: 1002
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