龙口市人工岛周边海域波浪场和水动力场的数值模拟

Numerical Simulation of Wave Field and Hydrodynamic Field Around the Artificial Island in Longkou

为了科学的分析离岸人工岛群对周边海岸动力的影响,本文以龙口市人工岛为例,运用MIKE21数值模拟软件建立了龙口离岸人工岛及附近海域的水动力模型和波浪模型,根据波浪的生成、成长和传播原理,针对最有可能形成较大波浪的W、WNW、NW三个方向,采用频率为0.5%(重现期为200a)的高潮位叠加频率为0.5%(重现期为200a)的W、WNW和NW向风作用下的波浪场和水动力场进行数值模拟研究,给出了高潮位条件下人工岛周边不同波向对应的有效波高和最大波高值,以及最大流速和流向数据,可为人工岛群的地坪标高确立和防浪建筑物的布设提供科学依据。

This paper takes Longkou artificial island group as an example to scientifically analyze the influence of offshore artificial island group on coastal dynamics.We use MIKE21 numerical simulation software to establish the hydrodynamic model and wave model offshore the artificial island and the surrounding sea area.According to the principle of generation,growth and propagation of waves,the wave field and hydrodynamic field under the action of W,WNW and NW wind with a high tide superposition frequency of 0.5%(recurrence period 200 years)were numerically simulated.The results show the effective wave height and maximum wave height corresponding to different wave directions around the artificial island under the condition of high tide,as well as the data of maximum velocity and flow direction.These data can provide scientific basis for the elevation establishment of the artificial island group and the layout of anti-wave buildings.