A study on the effects of crescent-shaped wing sails on ship propulsion performance
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This study entailed an analysis of the aerodynamic performance of wing sails with crescent-shaped airfoils by using com-putational fluid dynamics (CFD). Owing to recent International Maritime Organization environmental regulations, wind-assisted pro-pulsion technologies have gained attention, with wing sails being particularly promising because of their simple structure and high propulsion efficiency. Although crescent-shaped designs generate strong lift, studies on the impact of geometric variations remain limited. Therefore, this study evaluated the thrust coefficients (Ct) for six configurations combining three thickness levels (T10, T20, and T30) and two camber values (C10 and C20) under omnidirectional wind conditions ranging from 0° to 360°. The results were visualized using polar plots. The T10_C20 and T30_C10 configurations yielded the highest and lowest thrusts, respectively. These findings offer valuable design guidance for optimizing crescent-shaped wing sails.
Abstract
This study entailed an analysis of the aerodynamic performance of wing sails with crescent-shaped airfoils by using com-putational fluid dynamics (CFD). Owing to recent International Maritime Organization environmental regulations, wind-assisted pro-pulsion technologies have gained attention, with wing sails being particularly promising because of their simple structure and high propulsion efficiency. Although crescent-shaped designs generate strong lift, studies on the impact of geometric variations remain limited. Therefore, this study evaluated the thrust coefficients (Ct) for six configurations combining three thickness levels (T10, T20, and T30) and two camber values (C10 and C20) under omnidirectional wind conditions ranging from 0° to 360°. The results were visualized using polar plots. The T10_C20 and T30_C10 configurations yielded the highest and lowest thrusts, respectively. These findings offer valuable design guidance for optimizing crescent-shaped wing sails.