高比转速轴流式和斜流式泵喷水推进器推进特性分析  

Thrust Characteristics Analysis of Water Jet Propulsion with High Specific Speed Axial Flow Impeller or Mixed Flow Impeller

作　　者：倪永燕[1] 潘中永[2] 

机构地区：[1]江苏科技大学船舶与海洋工程学院,江苏镇江212003 [2]江苏大学国家水泵及系统工程技术研究中心,江苏镇江212013

出　　处：《船海工程》2015年第2期71-73,77,共4页Ship & Ocean Engineering

基　　金：国家自然科学基金(青年基金)(51209108)

摘　　要：对比比转速同为ns=769的两个轴流式叶轮和斜流式叶轮的水力性能和推进性能,分析其做为泵喷水推进器叶轮的适用性。分析结果表明,就所研究的两个叶轮而言,斜流式叶轮的高效区更宽,当做为泵喷水推进器叶轮使用时,轴流式叶轮的结构更紧凑、最大推力更大、最大推功比也更大。因此轴流式叶轮比斜流式叶轮更适合于用做泵喷水推进器的工作叶轮。An axial flow impeller and a mixed flow impeller with the same specific speed of ns=769 are investigated by comparing their hydraulic characteristics and thrust performance to analyze the suitability for using in a water jet propulsion.The results show that the mixed flow impeller studied here has a wider high efficiency zone.Nevertheless, the axial flow impeller has a more compact configuration, higher maximum thrust and higher maximum thrust-power ratio than the mixed flow one.There-fore, the axial flow impeller is more reasonable to be a part of a water jet propulsion.

关 键 词：泵喷水推进器 轴流式 斜流式 高比转速 推力 

分 类 号：U664.34[交通运输工程—船舶及航道工程]