Abstract: With the continuous development and utilization of marine resources, the convergence of modern marine ranching and offshore wind power has become an important development direction for intensive use of sea space and improving the efficiency of marine resource utilization. This paper constructed a tidal-driven three-dimensional dual-nested high-resolution hydrodynamic model of the Bohai Sea based on the FVCOM ocean numerical model, analyzed the hydrodynamic characteristics of the combined structure of the artificial reefs and the wind power foundation, as well as the changes in the hydrodynamic environment around the wind power foundation before and after the artificial reefs placed. By validating for harmonic analysis of M2, tidal current magnitude and direction, the skill assessment parameters are above 0.81, and the model had a high simulation accuracy. The model results showed that the tidal current in the wind power area were characterized by a northeast-southwest reciprocal flow; the artificial reefs can significantly reduce the horizontal flow velocity around the wind power foundation over a wide range, with a general reduction of 8% to 15%, reaching a maximum of 32.1%; there was significant upwelling generated above the artificial reefs, upwelling near the front of the incoming flow from the wind power foundation, and downwelling near the back, so their combined structure can significantly promote vertical mixing of the ocean current. The results of the study can provide a new case reference for the convergence of marine ranching and offshore wind power.

Key words: artificial reefs, offshore wind power, industrial convergence, numerical simulation, hydrodynamic

摘要： 随着海洋资源的持续开发利用，现代化海洋牧场与海上风电的融合已成为集约化利用海域空间、提高海洋资源利用效率的重要发展方向。本研究基于FVCOM海洋数值模型构建潮汐驱动的渤海三维双重嵌套高分辨率水动力模型，分析了人工鱼礁群与风机基础联合结构的水动力特征，以及人工鱼礁投放前后风机基础周围的水动力环境变化。对模型进行M2分潮调和分析、潮流流速大小与方向的验证，技能评估参数达到0.81以上，具有较高的模拟精度。结果显示：风电场区域的潮流特征呈东北-西南的往复流动；人工鱼礁群能在较大范围内显著降低风机基础周围的水平流速，普遍降低8%~15%，最高达到32.1%；人工鱼礁上方产生显著上升流，风机基础的来流近前方形成上升流，近后方形成下降流，两者的联合结构能够显著促进水体的垂向混合。研究结果可为海洋牧场与海上风电的融合研究提供新的案例参考。

关键词: 人工鱼礁群, 海上风电, 融合发展, 数值模拟, 水动力