【作者】 常晟铭； 丁恩宝； 王超； 孙聪； 赵雷明；

【Author】 CHANG Sheng-ming;DING En-bao;WANG Chao;SUN Cong;ZHAO Lei-ming;College of Shipbuilding Engineering,Harbin Engineering University;Shanghai Branch of China Ship Scientific Research Center;

【机构】 哈尔滨工程大学船舶工程学院； 中国船舶科学研究中心上海分部；

【摘要】 为了获得满足航速24节的KSC船用船舵设计要求的翼型,本文基于NSGA-Ⅱ遗传算法建立了船舵所用的NACA系列翼型的优化设计模型,综合考虑升力系数、升阻比的水动力特性,通过改变翼型的弦长和最大厚度,寻找最优翼型形式。数值结果表明,该翼型优化模型可以快速选取优异的翼型形式,改善翼型的水动力性能并增加舵效,优化完成时,最终选择了弦长为5.97525m,最大厚度比为0.131328的优化方案,该方案对翼型的升力系数的优化效果最佳,且对翼型的升阻比也有一定大的提升效果。更多还原

【Abstract】 In order to obtain the hydrofoil that meets the design requirements of KSC marine rudder with a speed of 24 knots,the optimal design model of NACA series hydrofoil used in rudder is established based on NSGA-Ⅱ genetic algorithm,which comprehensively considers the hydrodynamic characteristics of lift coefficient and lift-drag ratio,and finds the optimal hydrofoil form by changing the chord length and maximum thickness of the hydrofoil.The numerical results show that the hydrofoil optimization model can quickly select the excellent hydrofoil form,improve the hydrodynamic performance of the hydrofoil and increase the rudder effect when the optimization is completed,the optimization scheme with chord length of 5.97525 m and maximum thickness ratio of 0.131328 is selected.this scheme is the best for the lift coefficient of the hydrofoil,and has a great effect on the lift-drag ratio of the hydrofoil.更多还原