喷嘴导流片对喷水推进泵性能的影响  

Influence among nozzle guide vanes on the performance of a water-jet pump

作　　者：徐声海 郭成宇 刘厚林[2] 袁宵 邱勇 谈明高[2] XU Sheng-hai;GUO Cheng-yu;LIU Hou-lin;YUAN Xiao;QIU Yong;TAN Ming-gao(Military Representative Office of the PLA Navy Force in Yangzhou,Yangzhou 225001,China;Research Center of Fluid Machinery Engineering and Technology,Jiangsu University,Zhenjiang 212013,China;Jiangsu Zhenhua Haike Equipment Technology Co.,Ltd.,Taizhou 225500,China)

机构地区：[1]海军装备部驻扬州地区军事代表室,江苏扬州225001 [2]江苏大学流体机械工程技术研究中心,江苏镇江212013 [3]江苏振华海科装备科技股份有限公司,江苏泰州225500

出　　处：《舰船科学技术》2024年第10期27-33,共7页Ship Science and Technology

基　　金：国家自然科学基金资助项目(52179084,52379090);泰州市重大科技成果转化项目(SCG202205)。

摘　　要：本文提出减少径向高度和导流片环绕导流锥分布这2种喷嘴导流片结构,通过DES-FEM耦合的方法研究了喷嘴导流片对喷水推进泵推力及噪声性能的影响。结果表明,随着喷嘴导流片径向高度减少,喷水推进泵推力增大0.61%,流量略微增大而扭矩略微降低,内流噪声主频仍为导叶叶频但幅值降低2.43%,总声压级略微升高;导流片环绕导流锥分布时,喷水推进泵推力提高1.03%,流量增大0.76%,扭矩提高,声压级主频处幅值降低2.05%,总声压级降低,内流噪声主频由导叶偏移至叶轮处,但两者声压级幅值差异较小;各方案频谱中均存在叶轮叶频谐频;内流噪声能量主要集中在中低频段。Two crucial parameters,namely the radial height and distribution of the nozzle guide vanes,were taken into consideration,based on the initial nozzle guide vane structure.The influence of various nozzle guide vanes on the thrust and noise performance on the water-jet pump was studied by hybrid method of DES and FEM.The numerical results illustrated that as the radial height of the nozzle guide vanes decreases,the thrust and flow rate of the WJP increase while the torque de-creases a little.Besides,the guide vane passing frequency is still identified as the main frequency of internal flow noise,al-though the amplitude of sound pressure level decreases 2.43%.The overall sound pressure level of internal flow noise in-creases.When the nozzle guide vanes are distributed around the guide cone,the thrust of the water-jet pump increases by 1.03%,flow rate increases by 0.76%and toque increases a lttle.Meanwhile,the amplitude at the main frequency of sound pressure level decreases by 2.05%and the overall sound pressure level of internal flow noise decreases.Additionally,the main frequency of internal flow noise shifts to the impeller blade passing frequency and the guide vane passing frequency be-comes the secondary frequency.However,the difference in sound pressure level amplitude between these two frequencies is small.There is impeller blade harmonic frequency in different schemes.Internal flow noise energy is predominantly found within the low to medium frequency band.

关 键 词：喷水推进泵 喷嘴导流片 数值模拟 

分 类 号：U664.34[交通运输工程—船舶及航道工程]