自由液面对螺旋桨性能的影响  

INFLUENCE OF FREE SURFACE ON PROPELLER CHARACTERISTICS

作　　者：王国强[1] 贾大山[1] 

机构地区：[1]上海交通大学

出　　处：《中国造船》1989年第1期3-10,共8页Shipbuilding of China

摘　　要：本文采用涡格升力面模型,提供了一个计算自由液面下(不计吸气影响)螺旋桨水动力性能的准定常升力面方法。在桨叶拱弧面上分布离散的涡系和表征桨叶厚度的源系,其未知涡强由满足螺旋桨物面条件、线性化自由液面条件和随边Kutta条件来确定。为了便于计算,对兴波部分简化了计算模型,螺旋桨用无限叶数螺旋桨模型来代替。 利用本数值方法编制的计算机程序,计算了桨轴有限沉深下螺旋桨的水动力特性,并和实验结果进行了比较,两者吻合良好。The paper presents a quasi-steady numerical lifting-surface method for the prediction of characteristics of a propeller immersed near the water surface without air ventilation. The vortex lattice method is applied. The propeller loading and blade thickness are denoted respectively by discrete line vortex and source elements which are placed on the camber surface. The unknown strengths of vortex elements are determined by satisfying the nopenetration condition on the camber surface, the linearized free surface condition and the Kutta condition at trailing edges. A simplified model of propeller with infinite number of blades is employed to account for the effect of free wave in this paper.Computer program has been developed. The hydrodynamic characteristics of the propeller immersed near the water surface are calculated and a comparison with experimental results gives satisfactory agreement.

关 键 词：螺旋桨模型 自由液面 水动力性能 升力面 随边 兴波 桨叶 计算机程序 桨轴 叶数 

分 类 号：U671[交通运输工程—船舶及航道工程]