不同喷水推进器进水流道综合性能分析
Synthetical performance analysis of different inlet ducts used for waterjet
付建 1李天志 2曾帆1
作者信息
- 1. 海军潜艇学院,山东青岛 266100
- 2. 上海齐耀动力技术有限公司,上海 201203
- 折叠
摘要
为掌握喷水推进器进水流道综合特性,以同一喷水推进泵所对应的3型进水流道为对象,分别分析不同进水流道在结构、水力性能和声传播特性上的差异,并针对不同进水流道截面变化对声传播特性的影响进行分析.从流道的圆弧段出口到倾斜段的进口,2型流道截面面积均呈现先减小后增大趋势,1型流道的截面面积基本不变.从水力性能角度讲,3型流道性能没有显著差别;从声传播特性上讲,变截面流道在整个分析频段内要优于等截面流道.最后文中仅以流道圆弧段和倾斜段为分析对象,分析不同参数变化对声传播特性的影响,计算结果表明流道倾角对声传播特性影响较大.
Abstract
In order to master the synthetical performance of waterjet inlet duct,the differences in geometry,hydraulic performance and sound propagation characteristic of three inlet ducts used for the same waterjet pump are analyzed,besides that the influence of cross-section variety corresponding to different inlet ducts on sound transmission is also analyzed.The section area of two ducts firstly become smaller and then become bigger from the outlet of circular-arc segment to the inlet of incline segment,while the section area is the same for the third duct.There is no significant difference between three inlet ducts in hydraulic performance;In terms of sound propagation characteristics,the variable cross-section duct is superior to the constant cross-section duct throughout the entire analysis frequency range.At last,the circular section and incline section of the duct is taken as the object to analyze the influence of different parameters on sound propagation characteristics.The calculation results show that the incline angle of inlet duct has notable influence on the sound propagation characteristic.
关键词
喷水推进器/进水流道/截面变化/声传播特性Key words
waterjet/inlet duct/section variety/sound propagation characteristic引用本文复制引用
基金项目
国防装备预研基金资助项目(41410030102)
出版年
2024
NETL
NSTL
万方数据