芝罘湾水动力与物质输运现状的数值模拟

马晓歌; 褚忠信; 崔恩苹; 祝琳

doi:10.16028/j.1009-2722.2022.038

芝罘湾水动力与物质输运现状的数值模拟

1.
中国海洋大学海洋地球科学学院，青岛 266100

2.
海底科学与探测技术教育部重点实验室，青岛 266100

基金项目: 国家自然科学基金（41376052）

详细信息

作者简介: 马晓歌（1997—），女，在读硕士，主要从事第四纪地质方面的研究工作. E-mail：mxg1214@foxmail.com

通讯作者: 褚忠信（1976—）男，博士，教授，主要从事海洋地质方面的研究工作. E-mail：zhongxinchu@ouc.edu.cn

中图分类号: P748

收稿日期: 2022-02-10

刊出日期: 2023-05-28

Numerical simulation of hydrodynamics and mass transport in Zhifu Bay

1.
College of Marine Geosciences, Ocean University of China, Qingdao 266100, China

2.
Key Lab of Submarine Geosciences and Prospecting Techniques, Ministry of Education, Qingdao 266100, China

More Information

Corresponding author: CHU Zhongxin, zhongxinchu@ouc.edu.cn

Received Date: 10 February 2022

Publish Date: 28 May 2023

摘要

摘要:
为海洋生态保护和海岸工程建设等工作提供参考，基于Mike21模型水动力学（HD）模块，得到最新岸线形态下芝罘湾的潮流场，涨、落潮历时不均，落急潮流流速大于涨急潮流；东北岸流速最大，向西南靠岸渐小；湾北涨、落潮流向相反，湾中、南部流向在涨急时刻为SW向，落急时刻由南呈NW向向北顺时针逐渐转为NE向。计算了15个潮周期的欧拉余流场，余流流向除湾南沿岸局部区域沿岸向南外，整体为中心在湾东北的顺时针余环流,余流流速整体较小，大部分区域不超过0.06 m/s。芝罘湾内等距离释放16个自由粒子，据粒子运移轨迹得知：湾以北外海的物质不易向湾内输运，湾内自由粒子最终均运移出湾外，湾内无聚集，表明芝罘湾的水动力情况利于物质向外输运；担子岛以北的粒子向东输出湾内后，绕开担子岛等岛屿输运至东南外海；担子岛以南的粒子经过在湾内回旋振荡，以“∞”型轨迹最终南下。
- Mike21 /
- 芝罘湾 /
- 水动力环境 /
- 潮余流 /
- 粒子追踪
Abstract:
To provide a reference for marine ecological protection and coastal engineering construction, the tidal field of Zhifu Bay of Yantai, Shandong, was constructed using the Mike21 HD model and particle tracking under the newest shoreline pattern. Result shows that the duration of rising and falling tides is uneven, and the tidal current velocity of the maximum ebb is greater than that of the maximum flood. The velocity on the northeastern bank is the largest, and decreases gradually towards the southwestern bank. In the north of the bay, the flow direction is opposite. In the middle and south of the bay, the flow direction is SW at the moment of flood and gradually turns from south to NW then turns clockwise to NE at the moment of ebb. The Euler residual flow field of 15 tidal cycles was calculated. The residual flow direction is a clockwise residual circulation centered in the northeast of the bay except for some areas towards the south coast. The residual flow velocity is slow on the whole, less than 0.06 m/s in most areas. Sixteen free particles were released equidistantly. The particle migration trajectories show that materials in the north of the bay was hard to move into the bay, and the free particles in the bay eventually migrated out of the bay. There was no aggregation of particles in the bay, indicating that the hydrodynamic condition of Zhifu Bay was conducive to moving materials out of the bay. The particles to the north of Danzi Island were transported eastward to the bay and then bypassed Danzi Island and other islands to the open sea to the southeast. The particles to the south of Danzi Island whirled and oscillated in the bay, and finally moved southward in a ∞-shaped trajectory.
- Mike21 /
- Zhifu Bay /
- hydrodynamic environment /
- tidal residual current /
- particle tracking

HTML全文

图 1 研究区域地形与测站

Figure 1.

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图 2 计算网格图

Figure 2.

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图 3 潮位验证

Figure 3.

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图 4 流速、流向验证

Figure 4.

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图 5 涨急时刻潮流场

Figure 5.

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图 6 落急时刻潮流场

Figure 6.

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图 7 2011年与2021年岸线对比

Figure 7.

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图 8 欧拉余流场

Figure 8.

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图 9 粒子轨迹

Figure 9.

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图 10 小潮期开始16 d后的浓度分布^[9]

Figure 10.

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