基于Lilley宽带声源模型的舵叶流噪声数值模拟研究  

Study on Numerical Simulation of Flow Noise About Rudder Based on Lilley Broad-bound Noise Source Model

作　　者：董仁义[1] 吴崇健[1] 张京伟[1] 

机构地区：[1]中国舰船研究设计中心,武汉430064

出　　处：《船海工程》2009年第5期24-26,31,共4页Ship & Ocean Engineering

基　　金：海军装备预研项目

摘　　要：以潜艇舵叶在流体中转动时的流场计算结果为基础,采用宽带声源模型,利用Lilley的声功率计算公式计算舵叶转动时,流体域的声功率级分布。通过对同一水域截面的声功率级分布以及不同水域截面的流体节点压力和声功率级分布的对比分析,证明计算结果符合Panton理论,给出对舵叶进行声学设计的建议。Using the Lilley＇s equal for the sound power, the broad-bound noise source model was adopted to calculate the sound power level （SPL） distribution in the fluid domain based on the results of flow field when the rudder rotates in the fluid. The numerical results is verified to accord with the Panton＇s theory through the contrast-analysis of SPL of the same fluid domain cross-section in different time and node pressure, and the SPL of the different fluid domain cross-section in the same time. Several suggestions were also given for acoustic design of the rudder.

关 键 词：Lilley宽带声源模型 舵叶 流噪声 

分 类 号：U662[交通运输工程—船舶及航道工程]