均匀流中螺旋桨无空泡噪声数值预报方法验证分析  

The numerical analysis of non-cavitations noise of the propeller in steady flow

作　　者：朱江波[1] 傅江妍[1] 陈曦[1] 冯观[1] ZHU Jiang-bo FU Jiang-yan CHEN Xi FENG Guan(China Ship Development and Design Center, Shanghai 201108, China)

机构地区：[1]中国舰船研究设计中心,上海201108

出　　处：《舰船科学技术》2017年第6期23-27,32,共6页Ship Science and Technology

摘　　要：为了分析敞水螺旋桨噪声性能,以某一螺旋桨为研究对象,采用大涡模拟方法对其敞水水动力性能进行计算,所得结果与试验值误差较小;然后运用基于无限元方法的声学软件Actran对螺旋桨的无空泡噪声进行数值模拟,并对特征点频谱曲线、螺旋桨声压云图、声指向性与衰减特性进行分析,得到单极子噪声特性-径向声压级高于轴向声压级,并且随着距桨中心距离的增大,声压级衰减速度减小,径向与轴向声压级差距缩小;验证数值预报方法的有效性,为船桨一体噪声数值模拟提供参考。In order to analyze the open water propeller noise performance, Author used one propellers model as the research object, used large eddy simulation method to calculate its open water hydrodynamic performance, the results obtained with the experimental error is small; then used the acoustic software ACTRAN based on infinite element method to calculate its non-cavitations noise simulation, and analyzed spectral curve of characteristic point; further analyzed the propeller sound pressure contours, sound directivity and sound attenuation characteristics, obtained the monopole noise characteristics-the radial sound pressure level is higher than the radial axial sound pressure level, and with increasing distance from the center of the propeller, the sound pressure level decay rate decreases, SPL radial and axial narrow the gap; verify the validity of numerical prediction method, provides reference for ship and propeller integrated noise simulation.

关 键 词：螺旋桨 Actran 无空泡噪声 噪声试验 敞水 

分 类 号：U661-31[交通运输工程—船舶及航道工程]