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

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

孙涛,
陶建华

天津大学, 力学系, 天津, 300072

基金项目: 国家自然科学基金(59839330);国家自然科学基金(19772031)

计量
- 文章访问数: 795
- HTML全文浏览量: 10
- PDF下载量: 880
- 被引次数: 0
出版历程
- 收稿日期: 2001-09-19
- 修回日期: 2002-10-15

Numerical modelling and experimental verification of pollutant transport under waves in the nearshore zone

Department of Mechanics, Tianjin University, Tianjin 300072, China

摘要

摘要: 在近岸缓坡浅水海岸,波浪破碎产生沿岸流是近岸海域流场的重要组成部分,它对污染物输移扩散规律的影响重大,在高阶近似抛物化缓坡方程求解大面积波浪场基础上,建立了波浪作用下污染物输移扩散数学模型.计算结果与不同坡度均匀斜坡地形上具有不同波高、周期的规则波及不规则波浪作用下污染物输移扩散实验结果进行了比较,分析了各种因素对波浪作用下沿岸流分布规律影响,所得结论认为地形坡度及入射波高对污染物输移扩散的影响较大,波浪作用将使缓坡海滩上污染物的输移扩散平行岸线方向.
- 沿岸流 /
- 抛物缓坡方程 /
- 污染物输移扩散 /
- 数值模拟
Abstract: Wave-induced longshore current is an important flow in the nearshore zone.It is very important to understanding and predicting pollutant dispersion under the wave-induced longshore current especially on mild slope.The model simulating pollutant dispersion under waves is proposed.Wave transformation is simulated based on the higher-order approximate parabolic mild-slope equation.Model tests of different incident waves acting on two plane beaches with different slopes are conducted.The numerical results are compared with the experimental data.The result of analysis indicates that the effect of the slope and the greater than others based on the comparison between the incident wave height on the pollutant dispersion is different cases.Pollutant transport is parallel approxirnately to the shoreline on the effect of waves for a mild-slope beach.
- longshore current /
- parabolic mild-slope equation /
- pollutant transport /
- numerical modelling

HTML全文

参考文献(10)

KANTARDGI I,MAIRANOVSKY F.,SAPOVA N.Water exchange and water quality in the coastal zone in the presence of structures[J].Coastal Engineering,1995,26:207-223.

RODRIGUEZ A,SANCHEZ-ARCILLA A,REDONDO,J,et al.Pollutant dispersion in the nearshore region:modelling and measurements[J].Wat Sci Tech,1995,32(9-10):169-178.

TAO Jian-hua,HAN Guang.Effects of water wave motion on pollutant transport in shallow coastal water[J].Science in China(Series E),2000,45(6):593-605.

LONGUET-HIGGINS M S.Longshore currents generated by obliquely incident sea waves.Parts 1 and 2[J].J Geophys Res,1970,75:6 778-6 789,6 790-6 801

KIRB J T.Higher-order approximations in the parabolic equation for water waves[J].J Geophys Res,1986,91:933-952.

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

LARSON M,KRAUS N C.Numerical model of longshore currents for bar and trough beaches[J].Journal of Waterway,Port,Coastal and Ocean Engineering,1991,117(4):326-347.

CHAWLA A,OZKAN-HALLER H T,KIRBY J T.Spectral model for wave transformation and breaking over irregular bathymetry[J].Journal of Waterway,Port,Coastal and Ocean Engineering,1998,124(4):189-198.

CHEN Y,FALONER R A.Modified forms of the third-order convection,second-order diffusion equation[J].Advances in Water Resources,1994,17:147-170.

邹志利,常梅,邱大洪,等.沿岸流的实验研究[J].水动力学研究与进展,2002,17(2):174-180.

施引文献

资源附件(0)

访问统计

计量

文章访问数: 795
HTML全文浏览量: 10
PDF下载量: 880
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