| 摘要: |
| 为掌握莱州湾潮余流特征和粒子运移特征，文章采取平面二维数值模拟的方法，计算得到莱州湾的潮流场，并分析潮流结构；在潮流场的基础上，计算和分析欧拉余流场；通过在不同位置释放自由运动的粒子，得到潮流作用下自由运动粒子的运移轨迹。研究结果表明：莱州湾涨潮时的最大流速约为2.19 m/s，落潮时的最大流速约为2.66 m/s，且均在湾口处出现最大流速；莱州湾欧拉余流速度较小，且湾口附近较大而湾内较小；莱州湾分布均匀的粒子在自由运移时出现不同程度的聚集，且整体运移趋势是向岸聚集。 |
| 关键词: 莱州湾 二维数值模拟 潮流 余流 粒子运移 |
| DOI： |
|
| 基金项目: |
|
| Characteristics of Tidal Residual Current and Particle Migration in Laizhou Bay |
| JIANG Yue,CHU Zhongxin,LIU Xincang,JIANG Jinfei,SUN Jiagao |
| College of Marine Geosciences，Ocean University of China |
| Abstract: |
| In order to study the characteristics of tidal residual current and particle migration in Laizhou Bay,the paper adopted the method of planar two-dimensional numerical simulation,calculated the tidal current field in Laizhou Bay,and analyzed the tidal current structure.The maximum flow velocity in Laizhou Bay was about 2.19 m/s during high tide and about 2.66 m/s during low tide,and the maximum flow velocity occurs at the mouth of the bay.Based on the tidal current field,the Euler residual current field was calculated.The Euler residual current velocity in the Laizhou Bay was small,the area near the bay mouth was relatively large,and the bay was relatively small.Freely moving particles were released at different positions in Laizhou Bay,and the movement trajectories of freely moving particles were obtained under the action of tidal current.The uniformly distributed particles in Laizhou Bay gathered at different degrees during free movement,and the overall migration trend was shoreward. |
| Key words: Laizhou Bay,Two-dimensional numerical simulation,Trend,Residual current, Particle migration |
