摘要
为了开发适用于轮缘推进器的无轮轴螺旋桨,以Ka4-70+19A导管螺旋桨为基础,构造了叶梢厚,叶根薄的反厚度规律桨叶,相应的桨叶翼型也进行了重新设计。根据不同的原则设计了3套桨叶翼型,使用CFX对3种桨叶进行敞水性能分析。结果表明:反厚度规律桨叶叶梢压力分布不均匀,吸力面靠近导边与随边位置出现较大面积高压区和压力最大值,压力面出现较大面积的低压区和压力最小值。Type1翼型梢部压力从导边到随边变化较大,敞水性能相对于原型桨变差;Type2桨叶能保持翼型攻角基本不变,但梢部载荷降低,敞水性能降低最多;Type3桨叶压力沿切向分布更均匀,敞水性能为三者最佳。研究结果可为RDT的反厚度螺旋桨设计提供参考。
In order to develop hubless propellers suitable for rim-driven thrusters(RDT), based on Ka+19A ducted propellers, this paper constructs blades with thick blade tips and thin blade roots. According to different principles, three sets of blade airfoils are designed, named Type1, Type2, Type3. Among them, Type1 is obtained by scaling the coordinates in the thickness direction in the prototype blade in equal proportions.Type2 maintains the arch line of the original airfoil, and the thickness is scaled on the same basis. Type3replaces the airfoil near the blade tip with a high lift-drag ratio airfoil on the basis of Type1. Use CFX to analyze the open water performance of the three blades. The results show that the blade tip pressure distribution is not uniform with the inverse thickness rule, a large area of high pressure area appears on the suction surface near the leading edge and the position of the trailing edge, and a large area of low pressure area appears on the pressure surface. Type1 airfoil tip pressure varies greatly from leading edge to following edge, and the open water performance is worse than that of the prototype propeller;Type2 blades can maintain the airfoil angle of attack basically unchanged, but the tip load is reduced, and the open water performance is reduced;Type3 blade pressure is more evenly distributed along the tangential direction, and the open water performance is the best of the three. The results of this study can provide a reference for the design of RDT’s reverse thickness propeller.
作者
杨蕾
周军伟
闫文辉
梅蕾
于东
YANG Lei;ZHOU Junwei;YAN Wenhui;MEI Lei;YU Dong(Harbin Institute of Technology(Weihai)School of Ocean Engineering,Weihai 264209,China;School of Mechanical and Material Engineering,North China University of Technology,Beijing 100144,China)
出处
《中国造船》
EI
CSCD
北大核心
2022年第1期113-125,共13页
Shipbuilding of China
关键词
轮缘推进器
反厚度螺旋桨
螺旋桨载荷
桨叶设计
rim driven thruster
reverse thickness propeller
propeller load
blade design
