马晓歌,褚忠信,崔恩苹,等. 芝罘湾水动力与物质输运现状的数值模拟[J]. 海洋地质前沿,2023,39(5):25-32. DOI: 10.16028/j.1009-2722.2022.038
    引用本文: 马晓歌,褚忠信,崔恩苹,等. 芝罘湾水动力与物质输运现状的数值模拟[J]. 海洋地质前沿,2023,39(5):25-32. DOI: 10.16028/j.1009-2722.2022.038
    MA Xiaoge, CHU Zhongxin, CUI Enping, et al. Numerical simulation of hydrodynamics and mass transport in Zhifu Bay[J]. Marine Geology Frontiers, 2023, 39(5): 25-32. DOI: 10.16028/j.1009-2722.2022.038
    Citation: MA Xiaoge, CHU Zhongxin, CUI Enping, et al. Numerical simulation of hydrodynamics and mass transport in Zhifu Bay[J]. Marine Geology Frontiers, 2023, 39(5): 25-32. 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

    Numerical simulation of hydrodynamics and mass transport in Zhifu Bay

    • 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。

       

      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.

       

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