部分浸水通气螺旋桨水动力性能  

HYDRODYNAMIC PERFORMANCE OF PARTIALLY SUBMERGED VENTILATED PROPELLER

作　　者：王国强[1] 贾大山[1] 盛振邦[1] 

机构地区：[1]上海交通大学

出　　处：《中国造船》1990年第2期22-31,共10页Shipbuilding of China

摘　　要：本文提供了一个计算桨轴在自由液面上方的部分浸水通气螺旋桨水动力性能的非定常数值升力面方法。假设桨叶以高速旋转进入、离开水面,叶背充满空泡,随边后空泡腔延伸到水面。在桨叶底面布置线源和线涡,随边后空泡面上布置线源,通过满足自由液面条件,物面不可穿透条件,叶背及随边后的压力条件来确定线涡和线源的强度,并由此计算螺旋桨水动力性能。利用本方法编制的程序,计算了部分浸水通气螺旋桨的水动力性能,并和实验结果进行了比较,两者吻合较为满意。The paper presents an unsteady numerical liftingsurface method for performance prediction of partially submerged ventilated propellers. It is assumed that the blade of the partially submerged ventilated prope ler enters and exits from water at high speed. When the blade of prope ller enters the free surface, the flow is expected to separate from both the leading and trailing edges of the blade, forming on the suction side a cavity, that vents to the atmosphere. The problem is solved by vortex lattice me thod line sources and vortices are placed on the lower surface of the blade to simulate the cavity thickness and loading on the blade respectively. Line sources are also located on the cavity surface behind the trailing edge of the blade to represent the cavity thickness there. In addition an image of the singularity system describing the motion of the propeller blade has to be introduced to satisfy the free surface condition. The strength of all the singularities is determined by satisfying the non-penetration condition on the lower surface of the blade and the pressure condition on the back of the blade and behind the trailing edge of the blade. The hydrodynamic performance of the partially submerged ventilated propeller can then be calculated. The. results predicted by the present method are compared with experimental data as well as other numerical results. The agreements are satisfactory.

关 键 词：浸水通气螺旋桨 水动力性能 桨轴 浸水桨 推进器 叶栅效应 

分 类 号：U664.33[交通运输工程—船舶及航道工程]