近岸波、流作用下结构物附近海岸演变的数值模拟
Numerical modelling of sand beach evolution around coastal structures under the action of nearshore wave and currents
-
摘要: 针对与砂质海岸在波浪作用下的演变有关的波浪、近岸流及输沙问题进行了系统的研究,并对结构物附近海岸演变进行了数值模拟。考虑了波浪折射-绕射及波浪破碎的综合作用,在近岸流场的模拟中用沿水深积分形成的K方程模型确定涡粘系数。计算岸滩地形变化时,综合波浪、近岸流作用的底沙和悬沙输沙率,并考虑波浪对泥沙作用的影响。模型对防波堤和近岸沉船附近地形变化进行了模拟,效果良好。Abstract: The systematic study has been made on the problems of wave,nearshore currents,sediment transport related to the coastal evolution of sand beach under the action of wave.Based on the results,the numerical model of sand beach evolution around a coastal structure has been established.To predict the bed topography,the sediment transport rates of bedload and suspended load under the action of wave and nearshore current as well as the effects of wave on the sediment ave considered.The sand beach evolutions which caused respectively by a breakwater and a settled ship near the shore are simulated.
-
Key words:
- Wave /
- nearshore current /
- beach evolution
-
Watanabe A,Maruyama K,Shimizu T et al.Numerical prediction model of three-dimensional beach deformtion around a structure.Coastal Eng.In Japan,1986,29:179~194 Watanabe Akira.Nearshore dynamics and heach processes.In:The Lecture at Tianjin University,Tianjin University,1990 De Briend H J,Zyserman J,Nicholson J et al.Mediura-term 2DH coastal area modelling.Coastal Eng.,1993,21:193~224 陶建华.近岸波、流、泥沙和海岸形态动力学的研究进展.见:第10届全国水动力学学术会议论文集.北京:海洋出版社,1996 梅强中.水波动力学.北京:科学出版社,1984 Berkhoff J C W,Booy N,Radder A C.Verification of numerical wave propagation models for simple harmonic linear water waves.Coastal Eng.,1982,(6):255~279 Dingemans M W,Radder A C,De Bralnd H J,Computation of the driving force of wave-induced currents.Coastal Eng.,1987,11:539-563 Philppe Pechon,Arnaud Desitter.Comparison of computed three-dimensional wave-driven currents with measurements.Coastal Dynamics'95,gdansk,Poland,1995 曹祖德,王佳芬.波浪掀沙、潮流输沙的数值模拟.海洋学报,1993,15:107~118 白玉川.潮流和波浪联合输沙的理论研究及其数学模型[博士论文].天津大学,1994 倪浩清,沈永明.深度平均的K-ε紊流全场模型及其验证.水利学报,1994,11:8~17 薛鸿超,顾家龙,任汝述.海岸动力学.北京:人民交通出版社,1080 Bailard J A.An energetics total load sediment transport model for a plane sloping beach.Jour Geophys Res,1981,86(c11):10938~10954 Michael B,Kabiling,Shinjisato.Two-dimensional nonlinear dispersive wave-current and three-dimensional beach deformation model.Coastal Eng.In Japan,1993,36(2):195~212 王玉定.沉船连岛坝的形态分析.港工技术,1989,(2):31~39
点击查看大图
计量
- 文章访问数: 890
- HTML全文浏览量: 9
- PDF下载量: 832
- 被引次数: 0