基于大涡模拟的螺旋桨非空泡噪声预报研究
详细信息 查看官网全文
- 英文论文题名：Numerical Analysis for Non-cavitating Noise of Propeller Using LES
- 论文作者：杜炳鑫 ; 明平剑 ; 张文平
- 英文论文作者：DU Bing-xin ; MING Ping-jian ; ZHANG Wen-ping ; College of Power and Energy Engineering ; Harbin Engineering University
- 年：2016
- 作者机构：哈尔滨工程大学动力与能源工程学院;
- 论文关键词：螺旋桨 ; 非空泡噪声 ; 频率分辨率
- 英文论文关键词：Propeller ; Non-cavitating noise ; Frequency resolution
- 会议召开时间：2016-07-28
- 会议录名称：第二十七届全国振动与噪声应用学术会议论文集
- 语种：中文
- 分类号：U664.33
- 学会代码：ZDZD
- 会议名称：第二十七届全国振动与噪声应用学术会议
- 会议地点：中国黑龙江哈尔滨
- 主办单位：中国振动工程学会振动与噪声控制专业委员会
- 学会名称：中国振动工程学会振动与噪声控制专业委员会
- 页数：6
- 文件大小：464k
- 原文格式：D
- 会议级别：全国
摘要
本文采用大涡模拟方法模拟螺旋桨P4119在均匀初始场中的流场分布,然后采用FW-H方程计算螺旋桨的非空泡噪声。结果表明:螺旋桨非空泡噪声的频域分布受频率分辨率影响较大。当频率分辨率与螺旋桨基频成整数倍关系时,螺旋桨非空泡噪声由基频和叶频以及各阶谐频处的离散单频峰值噪声和宽频噪声组成。当分辨频率与螺旋桨基频不成整数倍关系时,螺旋桨的离散单频峰值噪声减小,宽频噪声明显变大甚至淹没部分高阶谐频的峰值。螺旋桨螺旋桨非空泡噪声以叶频噪声和基频噪声为主,呈"8"字形分布,最大值方向与螺旋桨轴相垂直。
The non-cavitating noise of the propeller 4119 has been investigated in this paper, where Large-eddy simulation(LES) method is used to simulate the flow of propeller with the uniform inflow and the acoustic field is predicted by resolving the Ffowcs Williams and Hawkings(FW-H)equation. The frequency distribution of Sound Pressure Level(SPL) is influenced by the frequency resolution. When the fundamental frequency is multiple of the frequency resolution, the frequency distribution consists of the broadband noise and the discrete single-frequency peak noise. The SPL at the peak frequency decreases and the SPL of the broadband parts markedly increases which overlaps the peak SPL at high-order harmonic frequency when the frequency resolution does not match the fundamental frequency. The main parts of propeller noise are the BFP noise and the fundamental frequency noise. The frequency SPL directivity of propeller is in the shape of figure-of-eight with the maximum value located on the axis perpendicular to the hub axis.
The non-cavitating noise of the propeller 4119 has been investigated in this paper, where Large-eddy simulation(LES) method is used to simulate the flow of propeller with the uniform inflow and the acoustic field is predicted by resolving the Ffowcs Williams and Hawkings(FW-H)equation. The frequency distribution of Sound Pressure Level(SPL) is influenced by the frequency resolution. When the fundamental frequency is multiple of the frequency resolution, the frequency distribution consists of the broadband noise and the discrete single-frequency peak noise. The SPL at the peak frequency decreases and the SPL of the broadband parts markedly increases which overlaps the peak SPL at high-order harmonic frequency when the frequency resolution does not match the fundamental frequency. The main parts of propeller noise are the BFP noise and the fundamental frequency noise. The frequency SPL directivity of propeller is in the shape of figure-of-eight with the maximum value located on the axis perpendicular to the hub axis.
引文
[1]Lighthill M J.On sound generated aerodynamically.I:General theory[C]//Proceedings of the Royal Society A.London.England,1952.
[2]Ffowcs Williams J E,Hawkings D L.Sound generation by turbulence and surfaces in arbitrary motion[J].Mathematical and Physical Sciences,1969,264:321-342.
[3]Seol,H.,Jung,B.,Suh,J.C.,Lee,S.,2002.Prediction of non-cavitating underwater propeller noise.Journal of Sound and Vibration 257,131-156.
[4]孙红星,朱锡清.螺旋桨离散谱噪声计算研究[J].船舶力学,2003,7(4):105-109.
[5]B.Mousavi,A.Rahrovi,S.Kheradmand.Numerical simulation of tonal and broadband hydrodynamic noises of non-cavitating underwater propeller[J].Polish Maritime Research,2014,21,46-53.
[2]Ffowcs Williams J E,Hawkings D L.Sound generation by turbulence and surfaces in arbitrary motion[J].Mathematical and Physical Sciences,1969,264:321-342.
[3]Seol,H.,Jung,B.,Suh,J.C.,Lee,S.,2002.Prediction of non-cavitating underwater propeller noise.Journal of Sound and Vibration 257,131-156.
[4]孙红星,朱锡清.螺旋桨离散谱噪声计算研究[J].船舶力学,2003,7(4):105-109.
[5]B.Mousavi,A.Rahrovi,S.Kheradmand.Numerical simulation of tonal and broadband hydrodynamic noises of non-cavitating underwater propeller[J].Polish Maritime Research,2014,21,46-53.