浪致近岸水位变化及流场的数值计算

摘要: 本文探讨了单频波浪入射到具有复杂地形(缓变坡度)的近岸水域所导致的水位变化和近岸流场的数值计算问题.用了联合折射-绕射波浪场模型方程确定波要素,对一个模型海区和一个实际海区进行了实际计算.讨论了考虑和不考虑绕射效应的波浪场对水位变化及近岸流场的影响.数值计算结果表明,计算的水位变化和近岸流场都是(定性)合理的,岸坡水位最大升高达深水入射波高的11.2%～15.3%(以上);考虑和不考虑绕射效应的波浪场对计算的水位变化和近岸流场都有影响,特别是对流速量值影响很大.
- 近岸水位变化 /
- 流场 /
- 波浪场 /
- 联合折射-绕射 /
- 波要素

Longuet-Higgins M S,R W Stewart.Radiation stress in water waves;a physical discussion with applications.Deep-Sea Res.,1964,11,529-562

Phillips O M.The Dynamics of the Upper Ocean.England:Combndge University Press.1966

文圣常,余宙文.海浪理论与计算原理.北京:科学出版社,7985

Longuet-Higgins M S.Longshore currents generated by obliquely incident sea waves,1.J.Cieophys.Res.,1970.75(33):6790-6801

Noda E K.Wave induced nearshore circulation.J.Geophys,Res.,1974,79(27):4097-9106

Wu C S,P I.F Liu.Finite element modelling oI nonlinear coastal currents.J.Waterway.Port,Coastal and Ocean Enginearing,1985,111(2):417-432

Sherman D J,B Greenwood.Determination of wave angle in shallow water.J.Waterway,Port,Coastal and Ocean Enginearing,1986,101(1):729-139

佐藤昭二,永井纪彦,小博昭.波によゐ海沂流の数值计算の一例.港湾技研资料,1978,(290):2-16

Liu P L F,C C Mei.water motion on a beach to the presence of a breakwater,I.Waves,2.Mean currents.J.Geophys.Res.,1976,81(18):3079-3094

Ebersole B A.Refraction-diffraction model for linear water waves.J.Waterway.Port,Coastal and Ocean Enqmeemg,1985,111(6):539-553

Berkhoff J C W.Computation of combined refraction-diffraction.In:Proc.13th Coastal Engineering Conf.,Vo.1,Chap.24,ASCE,New York,1972.471-490

Sonu C J.Field observation of nearshore circulation and meandering currents.J.Geophys.Res.,1972,77(18):3232~3247

Longuet-Higgins M S,E W Stewart.Radiation stress and mass transport in gravity waves with application to surf beats.J.Fluid Mech.,1962,13,481-504

Hansen U A.Wave set-up and design water level.J.Waterway,Port,Coastal and Ocean Division,1978,104:227-234

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