摘要
本文选择一组几何相似桨模和一组直径相同桨模进行了近自由液面下变沉深、变转速的敞水试验.在分析试验结果的基础上,提出了螺旋桨吸气试验的相似准则,提供了判断发生局部吸气和全吸气的近似公式,以及吸气后螺旋桨水动力性能的近似估算方法,并探讨了吸气情况下螺旋桨轴承力的脉动.
Open water tests have been carried on a giosim of propellers and
a set of propellers with equal diameters operating in various immersion and
rates of revalution.On the basis of analysis of experimental results,the follo
-wing work has been done in this paper:(1)the scaling problem of the ventilated
propellers immersed near the water surface has been investigated and the
scaling laws are presented;(2)methods of judging the state of partial ventila
-tion or super ventilation are proposed;(3)approximate formulae for predic-
ting the performance of ventilated propellers are doveloped;(4)fluctuation
of propeller bearing forces induced by the air ventilation phenomenon has
been examined.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
1990年第4期32-41,共10页
Journal of Shanghai Jiaotong University
关键词
螺旋桨
船舶推进
水动力性能
propeller
ship propulsion
ship model experiment
