On-site renewable energy generation in the built environment can be achieved by incorporating wind turbines in the integral design of buildings. Passages through buildings are considered promising to strengthen the local wind resource availability but information concerning their design and performance is scarce. Therefore, two key design parameters that can enhance the wind energy performance of ducted openings in high-rise buildings are addressed and optimized via CFD simulations: the fillet radius (r) of the opening and the duct diameter (d₀). 3D steady RANS simulations are performed and validated with wind tunnel data from the literature. Fillets are shown to suppress flow separation, thereby enhancing the magnitude and uniformity of the wind speed in the duct and reducing the turbulent kinetic energy. With a reference diameter d₀ = D, the best-performing configuration has a normalized fillet radius r/d₀ = 0.2, which increases the average wind speed in the duct by 65% and the wind power by 354%. Modifying the duct diameter alone has limited influence. However, combining a larger duct diameter d₀ = 1.5D with fillets with r/d₀ = 0.4, can yield up to 78% increase in average wind speed and 650% in wind power density. Findings indicate that the dimensionless wind speed in the duct (U/U₀) scales closely in proportion to the normalized fillet radius (r/d₀). With these results, the present study demonstrates the aerodynamic advantage of ducted openings in buildings and identifies relevant design conditions required to improve the wind resource availability for the prospective implementation of wind turbines.

通过将风力涡轮机纳入建筑物的整体设计，可以在建筑环境中实现现场可再生能源发电。穿过建筑物的通道被认为有希望加强当地风力资源的可用性，但有关其设计和性能的信息很少。因此，可以通过 CFD 模拟解决和优化可以提高高层建筑管道开口风能性能的两个关键设计参数：开口的圆角半径 ( r ) 和管道直径 ( d ₀）。使用文献中的风洞数据执行和验证 3D 稳定 RANS 模拟。圆角被证明可以抑制流动分离，从而提高管道中风速的大小和均匀性，并减少湍流动能。在参考直径d ₀  =  D 的情况下，性能最佳的配置具有归一化圆角半径r/d ₀  = 0.2，这使管道中的平均风速增加了 65%，风力增加了 354%。单独修改管道直径的影响有限。但是，将较大的风管直径d ₀  =  1.5D与r/d _{0 的}圆角组合在一起 = 0.4，平均风速可提高 78%，风功率密度可提高 650%。结果表明，管道中的无量纲风速 ( U/U ₀ ) 与归一化圆角半径 ( r/d ₀ )成比例地密切相关。有了这些结果，本研究证明了建筑物中管道开口的空气动力学优势，并确定了提高风力资源可用性所需的相关设计条件，以实现风力涡轮机的预期实施。