摘要
为了研究渤海湾潮致余流,运用Mike21模拟了渤海湾潮流场,揭示出潮波运动的规律,得到渤海湾的潮流场,在涨潮时最大流速为1.4m/s,落潮时最大流速为1.12m/s。根据欧拉余流的定义计算了潮致欧拉余流场,其最大流速为0.2m/s,中值为0.005m/s,在渤海湾北部区域和南部东营附近存在环状结构。在渤海湾不同位置释放自由粒子,通过粒子的运移路径发现渤海湾拉格朗日余流呈现双环结构。运用欧拉方法和拉格朗日方法分析渤海湾潮致余流场,阐明了渤海湾潮致余流的精细结构,可为渤海湾营养盐、沉积物或者污染物质的长期输送以及浮游生物、鱼卵等的迁移和分布规律等提供动力学基础。
In order to study the tide-induced residual current in the Bohai Bay, MIKE21 is used for simulating the tidal current field in the Bohai Bay, through which the law of tidal wave movement is revealed and the tidal current field in the Bohai Bay is obtained. The maximum velocity of the tidal current in the Bohai Bay is 1.4 m/s during the rising tide and 1.12 m/s during the falling tide. According to the definition of Euler residual current, the tide-induced Euler residual current field is calculated. Its maximum value is 0.2 m/s and medium value is 0.005 m/s. An annular structure occurs both in the north of the Bohai Bay and near Dongying in the south of the bay. By releasing free particles at different positions in the Bohai Bay, we find that the Lagrangian circulation in the Bohai Bay has a double ring structure. Both the Eulerian method and the Lagrangian method are used to analyze the tide-induced residual current field in the Bohai Bay, and the structure of the tide-induced residual current in the Bohai Bay is clarified.
作者
刘鑫仓
刘艳玲
迟万清
卢志勇
黄炳智
LIU Xin-cang;LIU Yan-ling;CHI Wan-qing;LU Zhi-yong;HUANG Bing-zhi(College of Marine Geoscience, Ocean University of China , Qingdao 266100, China;College of Environmental Science and Engineering, Ocean University of China , Qingdao 266100, China;First Institute of Oceanography, MNR , Qingdao 266061, China)
出处
《海岸工程》
2019年第3期224-231,共8页
Coastal Engineering
基金
中央级公益性科研院所基本科研业务费专项资金资助项目——水面综合散热系数现场测定技术及其在温排水二维数学模型中的应用研究(2014T06)
关键词
数值模拟
MIKE21
潮流场
欧拉余流
拉格朗日余流
numerical simulation
Mike21
tidal current field
Eulerian residual current
Lagrangian residual current
