ECOMSED模式在杭州湾海域流场模拟中的应用
Application of ECOMSED model to the simulation of Hangzhou Bay tide current
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摘要: 针对杭州湾独特的喇叭型强潮河口湾的特点,基于Blumberg等(1996)的ECOMSED模式,引入动边界技术,建立杭州湾三维动边界的潮流模型.模型以正交曲线坐标下三维非线性水动力方程为基本方程,应用Mellor和Yamada的2.5阶湍流闭合模型计算紊动黏滞系数,嵌入Grant和Madsen的底边界层模型考虑波浪对底部应力的作用,采用干湿网格法模拟潮流漫滩过程;综合考虑径流,风应力,密度流和M2,S2,K1,O1四个主要分潮和M4,S4,MS4三个浅水分潮的作用,从而提高杭州湾潮流模拟的精度.通过验潮站调和常数和多次海流连续观测资料的验证,表明该文建立的模型可以更好的用于杭州湾流场的预报模拟.
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关键词:
- 杭州湾 /
- 三维潮流 /
- 动边界 /
- 浅水分潮 /
- Grant-Madsen模型
Abstract: A 3-Dvariable boundary numerical tidal model for the Hangzhou Bay is established.The model is based on ECOMSED model (Blumberg et al., 2002), and is modified by introducing Drying and Wetting scheme technology.AR-coordinate transformation in vertical and a curvilinear coordinate in horizontal are used.The level 2.5 turbulence closure model is also used to give more reasonable verticaleddy viscosity coefficient.A Grant and Madsen model is used to calculate the shear stress of wave and current.Adrying and wetting scheme technology is used to treat the tidal floodebb in tidal flatareas.An application of the model to the Hangzhou Bay grasps the tidal charact erstics well.the computed result in the Hangzhou Bay agrees with the observation well.In order to improve the accuracy of the baroclinic pressure gradient, the impacts of river flow, wind, baroclinic pressure induced by salinity and tide (including M2, S2, K1, O1, M4, Ms4 and S4) are taken into account.The simulated results are fairly consistent with obser vations. -
曹德明,方国洪.杭州湾潮汐潮流的数值模拟[J].海洋与湖沼,1986,3:93-101. 曹德明,方国洪.杭州湾和钱塘江潮波的联合数值模拟[J].海洋学报,1988,5:521-530. 许卫忆,苏纪兰.杭州湾二维潮波计算及底质分布的动力成因[J].海洋与湖沼,1986,11:493-503. 李身铎,胡辉.杭州湾流场的研究[J].海洋与湖沼,1987,1:28-38. 李身铎,曹德明,方国洪.杭州湾潮流湍应力和涡动粘性的估算[J].海洋学报,1985,4:412-422. 李身铎,顾斯美.杭州湾潮波三维数值模拟[J].海洋与湖沼,1993,1:8-15. 何青.杭州湾北部水域污染物扩散输移的数值模拟与分析[D].上海:华东师范大学,1988. 史峰岩,朱首贤,朱建荣,等.杭州湾、长江口余流及其物质输运作用的模拟研究:I.杭州湾、长江口三维联合模型[J].海洋学报,2000,9:1-12. 朱首贤,丁平兴,史峰岩,等.杭州湾、长江口余流及其物质输运作用的模拟研究:Ⅱ.冬季余流及其对物质的运输作用[J].海洋学报,2000,11:1-12. 朱建荣,朱首贤.ECOM模式的改进及在长江河口、杭州湾及邻近海区的应用[J].海洋与湖沼,2003,7:364-374. 杨陇慧,朱建荣,朱首贤.长江口杭州湾及邻近海区潮汐潮流场的三维数值模拟[J].华东师大学报,2001,9:74-83. 孙昭晨,梁书秀,沈书明,等.三维海洋紊流模型对杭州湾附近潮流场数值模拟[J].大连理工大学学报,2000,9:609-612. 马启南,陈永平,张金善,等.杭州湾的三维水流数值模拟[J].海洋工程,2001,11:58-66. 蒋国俊,陈吉余,姚炎明.舟山群岛潮滩动力沉积特性[J].海洋学报,1998,3:139-146. 杨金中,赵玉灵,王毅,等.杭州湾南、北两岸潮滩变迁遥感动态调查[J].地质科学,2004,4:168-177. BLUMBERG A F,MELLOR G L.A coastal ocean numerical model[A].SUNDERMANN J,HOLZ K P,eds.Mathematical Modelling of Estuarine Physics,Proceedings of an International Dymposium,Hamburg,August 24-26,1978[C].SpringerVerlag,Berlin,1980. BLUMBERG A F,MELLOR G L.A description of a three-dimensional coastal ocean circulation model[A].HEAPS N,ed.Three-Di mensional Coastal Ocean Models[C].American Geophysical,Union,1987.1-16. BLUMBERG A F,MELLOR G L.A simulation of the circulation in the Gulf of Mexico[J].Israel J of Earth Sciences,1985,34:122-144. MATHISEN P P,MADSEN O S.Waves and currents over a fixed rippled bed 1.Bottom roughness experienced by waves and currents[J].Journal of Geophysical Research,1996,101(C7):16 533-16 550. MELLOR G L,YAMADA T.Development of a turbulence closure model of geophysical layers[J].J Atmos Sci,1974,33:1 791-1 896. 叶安乐,李凤岐.物理海洋学[M].青岛:青岛海洋大学出版社,1990. 孙文心.近海环境流体动力学数值模型[M].北京:北京科学出版社,2004. 陈则实.中国海湾志[M].北京:海洋出版社,1998. 朱建荣.海洋数值计算方法和数值模式[M].北京:海洋出版社,2003. 黄胜,卢启苗.河口动力学[M].南京:水利电力出版社,1992. 朱建荣,沈焕庭.长江冲淡水扩展机制[M].上海:华东师大出版社,1997. 海洋图集编委会.渤海黄海东海海洋图集(水文)[Z].北京:海洋出版社,1992.13-168. 海洋图集编委会.渤海黄海东海海洋图集(气象)[Z].北京:海洋出版社,1992.130-141. HU Ke-lin,DING Ping-xing,ZHU Shou-xian,et al.2D current field numerical simulation integrating Yangtze Estuary with Hangzhou Bay[J].China Ocean Eng,2000,14(1):89-102. TUPPER M,ABLE K W.Movements and food habits of striped bass in Delaware Bay salt mashes[J].Marine Biology,2000,137:1 049-1 058.
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