浙江近海潮汐潮流的数值模拟

陈倩; 黄大吉; 章本照

浙江近海潮汐潮流的数值模拟

1.
浙江大学, 力学系, 浙江, 杭州, 310027;国家海洋局, 第二海洋研究所, 浙江, 杭州, 310012;国家海洋局海洋动力过程与卫星海洋学重点实验室, 浙江, 杭州, 310012
2.
国家海洋局, 第二海洋研究所, 浙江, 杭州, 310012
3.
浙江大学, 力学系, 浙江, 杭州, 310027

基金项目: 浙江省自然科学基金资助项目(499018);国家自然科学基金资助项目(40076010).

计量
- 文章访问数: 749
- HTML全文浏览量: 4
- PDF下载量: 2290
- 被引次数: 0
出版历程
- 收稿日期: 2002-09-25
- 修回日期: 2002-12-10

Numerical simulation of tide and tidal currents in the seas adjacent to Zhejiang

1.
Department of Mechanics, Zhejiang Univiersity, Hangzhou 310012, China;Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China;Key Laboratory of Ocean Dynamic Processes and Satellite Oceanography of State Oceanic Administration, Hangzhou 310012, China
2.
Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China
3.
Department of Mechanics, Zhejiang Univiersity, Hangzhou 310012, China

摘要

摘要: 用三维陆架海模式(HAMSOM)对浙江近海的潮汐、潮流进行了数值模拟,并采用网格嵌套和动边界技术对原模式作了改进,以提高计算的精度,改进后的模式在浙江近海的应用中被证明是成功的.沿岸50个潮位站计算与实测值的比较表明,加入动边界以后的小区域细网格计算较之粗网格以及未加动边界以前精度普遍提高,比较的均方差结果为:M₂分潮振幅差4.6cm,相角差7.14°;S₂分潮振幅差5.0cm,相角差5.4°;K₁分潮振幅差2.25cm,相角差5.76°;O₁分潮振幅差1.56cm,相角差5.5°,可见计算与实测符合良好.另外,选取了105个实测潮流点,比较了表层M₂和K₁分潮流调和常数分量Ucosξ,Usinξ,Vcosη,Vsinη的实测值与计算值的偏差,结果表明计算与实测的符合程度较好.在此基础上,给出了各主要分潮的潮位同潮图、潮流同潮图、潮汐性质、潮流性质、潮流椭圆和潮流的运动形式等,发现4个主要分潮M₂,S₂,K₁,O₁在本区内均未出现无潮点;M₂分潮流在29°18'N,122°46'E处有一个圆流点.此外还得到了一些有意义的结论,都与实测情况符合良好,从而对整个浙江沿海区域的潮汐潮流特性有了一个全面认识.
- 数值模拟 /
- 网格嵌套 /
- 动边界 /
- 潮汐潮流 /
- 浙江近海
Abstract: By means of three-dimensional baroclinic primitive equation model——Hamburg shelf ocean model (HAMSOM),the tide and tidal currents in the seas adjacent to Zhejiang are simulated.Furthermore,the original model is improved by two numerical technologies——nested grid and moving boundary method,which are introduced to increase the computational precision.The improved mode is proved to be successful while it is applied to the seas adjacent to Zhejiang.Comparing the computed values with those of 50 tidal observatories,it is found that the computational precision with fine grids and moving boundary is generally higher than that with coarse grids or fixed boundary.The root-mean-square values of comparative results show that the difference between the simulated and the observed amplitudes of M₂ constituent is only 4.6 cm,the difference of phase-lags is 7.14°;the difference of amplitudes and phase-lags of S₂ constituent are 5.0 cm and 5.4°;the difference of amplitudes and phas-elags of K₁ constituent are 2.25 cm and 5.76°;the difference of amplitudes and phase-lags of O₁ constituent are 1.56 cm and 5.5°.
- numerical simulation /
- nested grid /
- moving boundary /
- tides and tidal currents /
- seas adjacent to Zhejiang

HTML全文

参考文献(24)

陈倩,黄大吉,章本照.浙江近海潮汐特征的研究[J].东海海洋,2003,21(2):1-12.

曹德明,方国洪杭州湾潮汐潮流的数值计算[J].海洋和湖沼,1986,17(2):93-101.

曹德明,方国洪杭州湾和钱塘江潮波的联合数值模型[J].海洋学报,1988,10(5):521-530.

李身铎,顾思美.杭州湾潮波三维数值模拟[J].海洋与湖沼,1993,24(1):7-15.

曹欣中,唐龙妹,张月秀.宁波、舟山内海域实测海流分析及潮流场的数值模拟[J].东海海洋,1996,14(2):1-9.

董礼先,苏纪兰象山港潮波响应和变形研究.Ⅱ象山港潮波数值研究[J].海洋学报,1999,21(2):1-8.

周大成.椒江河口大潮潮流特性的数值分析[J].浙江水利水电专科学校学报,2001,13(3):13-14,26.

李孟国,王正林.瓯江口潮流数值模拟[J].长江科学院院报,2002,19(2):19-22.

赵保仁,方国洪,曹德明.渤、黄、东海潮汐潮流的数值模拟[J].海洋学报,1994,16(5):1-10.

万振文,乔方利,袁业立.渤、黄、东海三维潮波运动数值模拟[J].海洋与湖沼,1998,29(6):611-616.

王凯,方国洪,冯士筰.渤海、黄海、东海M₂潮汐潮流的三维数值模拟[J].海洋学报,1999,21(4):1-13.

BACKHAUS J O. A semi-implicit scheme for the shallow water equations for applications to shelf sea modelling[J]. Coat Shelf Res, 1983, (2) :243-254.

BACKHAUS J O. A three-dimensional model for the simulation of shelf sea dynamics[J]. Deutsche Hydrographische Zeitschrift, 1985,38: 165-I78.

BACKHAUS J O, HAINBUCHER D. A finite difference general circulation model for shelf seas and its application to low frequency variability on the North European shelf[A]. NIHOUL J C, JAMART B M. Three-Dimensional Models of Marine and Estuarine Dvnamics[M]. Amsterdam:Elsevier Science Publishing B. V., 1987. 221-244.

黄大吉,陈宗镛,苏纪兰.三维陆架海模式在渤海中的应用[J].海洋学报,1996,18(5):1-13.

辛文杰.差分模型网格嵌套边界技术在工程潮流计算中的应用[J].水利水运科学研究,1999,12:355-360.

辛文杰.河口、海湾平面潮流数值计算中的几个问题[J].水动力学研究与进展,1993,8(3):348-354.

FULTON SR.An adaptivemultigrid barotropictropical cyclonetrackmodel[J].MonthlyWeatherReview,2001,129(1):138-151.

曹德明.胶州湾潮汐潮流的数值计算[J].海洋科学集刊(21)[C].北京:科学出版社,1984.157-164.

孙英兰,张越美.胶州湾三维变动边界的潮流数值模拟[J].海洋与湖沼,2001,32(4):355-361.

李燕初,蔡文理.ADI潮汐模型的活动边界方法及其效应[J].海洋学报,1993,15(2):115-120.

张存智,杨连武,窦振兴.具有潮滩移动边界的浅海环流有限元模型[J].海洋学报,1990,12(1):1-13.

韩康,吴冠,张存智.普兰店湾潮流场数值模拟[J].海洋环境科学,2001,20(1):42-46.

中华人民共和国交通部.港口工程技术规范(上册)[M].北京:人民交通出版社,1987.

施引文献

资源附件(0)