Page 82 - 《应该声学》2022年第2期

第 41 卷 第 2 期 Vol. 41, No. 2
2022 年 3 月 Journal of Applied Acoustics March, 2022

⋄ 研究报告 ⋄

T型三通水管路噪声特性数值研究 ∗

李 宁 1,2 陈 林 3 林鸿洲 1,2 王献忠 1,2† 叶 曦 3

(1 高性能船舶技术教育部重点实验室 (武汉理工大学) 武汉 430063)
(2 武汉理工大学船海与能源动力工程学院 武汉 430063)
(3 中国船舶及海洋工程设计研究院 上海 200011)
摘要：水管路系统工作运行中会产生较大的管路振动和流噪声。作为偶极子声源，充液管路内湍流激发的脉
动压力会形成流噪声，且激励管壁产生流激振动噪声。为了揭示水管道系统的流激振动噪声与流噪声特性的
区别，基于有限元方法对不同厚度的充液管路声学模态、结构模态以及耦合模态进行计算；基于计算流体力学
联合声学边界元的混合计算方法探讨变流速下流噪声与管路声学特性之间的关系；并计算分析变流速下流噪
声与流激振动噪声特性，变厚度下流激振动噪声特性；将变流速及变厚度管路的流噪声和流激振动噪声进行
对比。结果表明：流噪声的峰值频率受管路声学模态的影响，随着流速的增加流噪声能量会增加但峰值频率不
变；而流激振动噪声的峰值受管路耦合模态的影响，厚度增加导致模态变化，峰值频率改变；流噪声幅值要大
于流激振动噪声幅值。
关键词：充液管路；流噪声；流激振动噪声；混合计算法
中图法分类号: U664.84 文献标识码: A 文章编号: 1000-310X(2022)02-0250-07
DOI: 10.11684/j.issn.1000-310X.2022.02.010

Numerical study on noise characteristics of T-shaped three-way water pipeline

LI Ning 1,2 CHEN Lin 3 LIN Hongzhou 1,2 WANG Xianzhong 1,2 YE Xi 3

(1 Key Laboratory of High Performance Ship Technology (Wuhan University of Technology), Ministry of Education,
Wuhan 430063, China)
(2 School of Naval Architecture, Ocean and Energy Power Engineering, Wuhan University of Technology, Wuhan 430063, China)
(3 Marine Design and Research Institute of China, Shanghai 200011, China)

Abstract: Large vibration and flow noise occur in the water pipeline system. The turbulent pulsating pressure
in the liquid filling pipeline will generate flow noise and the flow-excited noise. The acoustic modes, structural
modes and coupling modes with different thickness are discussed by the finite element method. The relationship
between flow noise and pipeline acoustic mode is analyzed by hybrid CFD and acoustic BEM method. The
effect of flow velocity and thickness on flow noise and flow-excited noise are also analyzed. The results show
that the peak frequency of the flow noise is affected by the acoustic mode of the pipeline. As the flow velocity
increases, the flow noise energy will increase. The peak frequencies of the flow-excited noise depend on the
coupled modes of the pipeline. The amplitude of the flow noise is greater than the that of the flow-excited
noise.
Keywords: Liquid-filled pipeline; Flow noise; Fluid-excited noise; Hybrid method

2021-03-27 收稿; 2021-04-21 定稿
国家自然科学基金项目 (51779201)
∗
作者简介: 李宁 (1998– ), 男, 河南商丘人, 硕士研究生, 研究方向: 结构振动与声辐射。
† 通信作者 E-mail: xianzhongwang@whut.edu.cn