Abstract: As a lift-based energy-saving device, sails are increasingly deployed on modern ships to reduce fuel consumption and carbon dioxide emissions. This study investigates the performance of a NACA airfoil sail installed on a bulk carrier and identifies suitable areas for sail placement. Computational Fluid Dynamics (CFD) simulations were employed to analyze the flow fields around both the sail and the ship. The simulation results show good agreement with Experimental Fluid Dynamics (EFD) data. A comparison between the onboard sail and a freestanding sail reveals that the hull-induced airflow disturbance alters the lift characteristics of the sail. Furthermore, by analyzing the wind speed distribution above the deck under different wind directions, areas with higher wind speeds were identified, determining a "high-performance zone" more suitable for sail layout. This study provides valuable guidance for developing sail arrangement strategies in practical engineering applications.

Key words: rigid sail performance, layout strategy, hull effect, wind speed

摘要： 帆作为一种基于升力的新型节能装置，可实现节省燃油并减少二氧化碳排放的目的，已逐渐应用于现代船舶。该文以NACA翼型帆为研究对象，旨在分析其在散货船上的性能并确定适宜布置区域。首先，采用计算流体力学方法对帆和船舶的流场进行仿真，发现结果与工程流体力学数据基本一致;接着，通过对比船上安装帆与独立帆的数据，发现船体对气流经过所产生的扰动，会导致帆升力特性变化;最后，通过分析不同风向下收集到的甲板上方风速分布，确定风速较高的区域，进而确定适合布置帆的“高性能区域”。该研究可为实际工程中的船舶风帆布置策略制定提供参考。

关键词: 风帆性能, 布局策略, 船体影响, 风速