螺旋桨空泡诱导的脉动压力预报及振动风险评估新方法  

A new method for prediction of pressure fluctuation and evaluation of the risk of local vibration induced by propeller cavitation

作　　者：黄红波[1,2] HUANG Hong-bo(National Key Laboratory on Ship Vibration&Noise,China Ship Scientific Research Center,Wuxi 214082,China;Jiangsu Key Laboratory of Green Ship Technology,Wuxi 214082,China)

机构地区：[1]中国船舶科学研究中心船舶振动噪声重点实验室,无锡214082 [2]江苏省绿色船舶技术重点实验室,无锡214082

出　　处：《船舶力学》2020年第11期1375-1382,共8页Journal of Ship Mechanics

基　　金：国家自然科学基金集成项目(91952301);国家自然科学基金面上项目(11772239);工信部联装项目资助(2016[24])。

摘　　要：为适应日益增长的绿色船舶发展趋势,船舶经济性与舒适性要求越来越高。为避免螺旋桨空泡引起的船体局部振动超标问题,本文基于大量当代船舶全附体模型在大型循环水槽中的螺旋桨空泡与脉动压力试验数据及空泡特点,分析归纳出一种基于同类船舶螺旋桨主参数中值水平概念的脉动压力预报新方法。此方法在仅需要螺旋桨主参数的情况下就能较准确地预报民船螺旋桨空泡诱导的脉动压力幅值,可作为螺旋桨初期设计主参数选取优化的依据。同时结合脉动压力幅值与船桨相互影响强度,给出了船舶局部振动风险评估新方法,可应用于初步设计阶段船体尾部振动风险的评估。In order to avoid the local vibration problems of ship stern,it is necessary to predict the pressure fluctuation and evaluate the risk of local vibration induced by propeller cavitation.Under the requirement of vibration evaluation,a new empirical formula for pressure fluctuation prediction and a comprehensive evaluation method of vibration risk induced by propeller cavitation were developed based on up-to-date test results at the large cavitation channel of CSSRC.The new formula can be used for optimization of main propeller specifications and risk evaluation of local vibration at the early design stage.

关 键 词：螺旋桨空泡 脉动压力 船桨相互影响强度 

分 类 号：U661.313[交通运输工程—船舶及航道工程]