鳍梢小翼对船舶减摇鳍性能的影响

Influence of tip winglet on the performances of ship fin stabilizer

为改善鳍梢周围的流动结构并提高减摇鳍的综合性能,对加装鳍梢小翼的船舶减摇鳍进行数值研究,分析了减摇鳍在攻角和水流速度一定条件下,有/无鳍梢小翼以及小翼不同安装位置对减摇鳍流场和性能的影响.研究结果表明,加装鳍梢小翼可增加减摇鳍的升力,合理的安装方式可使升力提高18.4%;相对其他位置,小翼加装在减摇鳍鳍梢上方效果更好.鳍梢小翼的加装减小了鳍梢两侧水流压差,削弱了旋涡的影响,改善了减摇鳍鳍梢周围的流场环境.

In order to improve the flow structure around the tip and the comprehensive performance of fin stabilizer, the numerical study of the fin stabilizer with wingtip winglet was carried out, the effects of the fin stabilizer with/without wingtip winglet and the different installation positions of the fins on the flow field and performance of the fin stabilizer were analyzed under the conditions of certain angle of attack and incoming velocity. The results show that the lifting force on the stabilizer fin is increased by adding a winglet on the wingtip by up to 18.4%. Compared with other positions, the effect of the winglet on the upside of the fin tip is better. The attachment of the small wing reduces the pressure difference between the up and down sides near the fin tip, and the influence of vortexes, therefrom improves the flow field near the fin tip of the stabilizer fin.