离心泵作透平流体诱发外场噪声特性及贡献分析

PDF(3004 KB)

振动与冲击 ›› 2016, Vol. 35 ›› Issue (5) : 168-174.

论文

董亮1 代翠2 孔繁余1 付磊3 夏斌1

作者信息 +

Analysis of flow-induced noise characteristic and contribution to exterior noise for centrifugal pump as turbine

Dong Liang1 Dai Cui2 Kong Fanyu1 Fu Lei3 Xia Bin1

Author information +

文章历史 +

摘要

以某离心泵作透平为研究对象，对流体诱发的外场噪声特性进行了数值计算和试验研究。在典型流量下，采用雷诺时均方法获取壁面偶极子声源，并利用FEM/AML方法求解出叶轮和壳体偶极子源作用的流动噪声，基于声振耦合法计算出流体激励结构振动产生的外场流激噪声，分析不同性质噪声源的频谱特性，同时评估外场声源在各个频段下的贡献量。借助模态试验对透平壳体结构的模态参数进行了识别。结果表明，计算与试验振型近似，固有频率平均相对误差小于4.60%。结构的影响使得外场五阶叶频处声压最高，二阶叶频处次之。壳体偶极子作用的流激噪声对外场噪声的贡献最大，其次是壳体偶极子作用的流动噪声，叶轮偶极子作用的流激噪声对外场噪声贡献最小。研究结果为低噪声叶轮机械设计提供了一定的参考。

Abstract

Numerical simulation and experimental investigation were performed on flow-induced exterior noise characteristics of a centrifugal pump as turbine (PAT). Under typical flow conditions, the dipole sources were obtained using Reynolds-average method. The flow-borne noise and flow-induced structure noise due to impeller and casing source in exterior acoustic field were solved by FEM/AML. On the basis of this, the spectrum characteristics of each noise source and their contribution to exterior noise were distinguished. Meanwhile, the free modal parameters for casing were recognized by modal experiment. Results show that the average relative error of natural frequency between calculation and experiment is less than 4.60% under approximate mode of vibration. The sound pressure at five order blade passing frequency (BPF) becomes the highest due to the influence of casing structure, and the second order BPF comes second. The flow-induced structure noise due to casing source is the biggest contributor to exterior noise, followed by flow-borne noise due to casing source, and the flow-borne noise due to impeller source is least. The results can provide some reference for low noise design of similar turbomachinery.

导出引用

董亮1 代翠2 孔繁余1 付磊3 夏斌1. 离心泵作透平流体诱发外场噪声特性及贡献分析[J]. 振动与冲击, 2016, 35(5): 168-174

Dong Liang1 Dai Cui2 Kong Fanyu1 Fu Lei3 Xia Bin1 . Analysis of flow-induced noise characteristic and contribution to exterior noise for centrifugal pump as turbine[J]. Journal of Vibration and Shock, 2016, 35(5): 168-174

参考文献

[1] 论立勇，谢英柏，杨先亮．基于管输天然气压力能回收的液化调峰方案[J]．天然气工业，2006，26（7）：114-116．
LUN Li-yong，XIE Ying-bo，YANG Xian-liang．LNG peak-shaving proposal based on pressure energy recovery of pipe gas[J]．Natural Gas Industry，2006，26（7）：114-116．
[2] 杨军虎，张雪宁，王晓晖．基于离心泵的多级液力透平的性能预测与数值模拟[J]．兰州理工大学学报，2012，38（2）：42-46．
YANG Jun-hu，ZHANG Xue-ning，WANG Xiao-hui．Performance prediction and numerical simulation of hydraulic turbine based on multi-stage centrifugal pump[J]．Journal of Lanzhou University of Technology，2012，38（2）：42-46．
[3] 王松岭，论立勇，谢英柏，等．基于天然气管网压力能回收的联合循环构思[J]．热能动力工程，2005，20（6）：628-631．
WANG Song-ling，LUN Li-yong，XIE Ying-bo，et al．Combined cycle system concept for the recovery of pressure energy of a natural-gas pipe network[J]．Journal of Engineering for Thermal Energy and Power，2005，20（6）：628-631．
[4] 郑志，王树立，王婷，等．天然气输配过程流体压力能回收技术现状与展望[J]．天然气与石油，2009，27（1）：11-15．
ZHENG Zhi，WANG Shu-li，WANG Ting，et al．Present status and prospect of fluid pressure energy recovery in natural gas transmission and distribution [J]．Natural Gas and Oil，2009，27（1）：11-15．
[5] 蒋爱华，张志谊，章艺，等．离心泵噪声研究的综述和展望[J]．振动与冲击，2011，30（2）:77-84．
Jiang Ai-hua，Zhang Zhi-yi，Zhang Yi，et al．Review and outlook of studying on noise of centrifugal pumps[J]．Journal of Vibration and Shock，2011，30（2）：77-84．
[6] Silja C，Wulkau M．Hybrid numerical simulation of flow-induced radiation of air suction structures lined with porous material[C]//Proceedings of the 11th Pan-American Congress of Applied Mechanics，January 04-08，2009， Iguacu，Brazil．
[7] 魏应三，王永生．基于声场精细积分算法的潜艇流激噪声预报[J]．计算力学学报，2012，29（4）：574-581．
Wei Ying-san，Wang Yong-sheng．Flow-excited submarine structure acoustic prediction based on a refined integral algorithm[J]．Chinese Journal of Computational Mechanics，2012，29（4）：574-581．
[8] Parrondo J，Pérez J，Barrio R，González J．A simple acoustic model to characterize the internal low frequency sound field in centrifugal pumps[J]．Applied Acoustics，2011，72:59-64．
[9] Argarin J D，Hambric S．Using fluid velocity in lieu of impeller speed for dimensional analysis and a method for estimating fluid-borne noise due to flow turbulence within centrifugal pumps[C]//Proceedings of IMECE 2007，November 11-15，2007，Washington，USA．
[10] Chu S，Dong R，Katz J．Relationship between unsteady flow, pressure fluctuations, and noise in a centrifugal pump-part A:use of PDV data to compute the pressure field[J]．Journal of fluids Engineering，1995，117（1）:24-29．
[11] Dong R，Chu S，Katz J．Effect of modification to tongue and impeller geometry on unsteady flow，pressure fluctuations，and noise in a centrifugal pump[J]．Journal of Turbomachinery，1997，119（3）：506-515．
[12] 袁寿其，司乔瑞，薛菲，等．离心泵蜗壳内部流动诱导噪声的数值计算[J]．排灌机械工程学报，2011，29（2）：93-98．
Yuan Shouqi，Si Qiaorui，Xue Fei，et al．Numerical calculation of internal flow-induced noise in centrifugal pump volute[J]．Journal of Drainage and Irrigation Machinery Engineering，2011，29（2）：93-98．
[13] 杨爱玲，徐洋，李国平，等．叶片载荷对离心泵内流动激励力及噪声的影响[J]．排灌机械工程学报，2014，32（1）：23-28．
Yang Ai-ling，Xu Yang，Li Guo-ping，et al．Effect of blade loading on fluid-induced exciting force and noise in centrifugal pumps[J]．Journal of Drainage and Irrigation Machinery Engineering，2014，32（1）：23-28．
[14] Xavier D，José A，Vincent D，et al．Modal techniques for remote identification of nonlinear reactions at gap-supported tubes under turbulent excitation[C]//2009 ASME Pressure Vessels and Piping Conference，July 26-30，2009，Prague，Czech republic．
[15] Tang C，Wang Y S，Gao J H，et al．Fluid-sound coupling simulation and experimental validation for noise characteristics of a variable displacement external gear pump[J]．Noise Control Engineering Journal，2014，62（3）：123-131．
[16] Michael A，Nickolas V．Noise generated from a flexible and elastically supported structure subject to turbulent boundary layer low excitation[J]．Finite Elements in Analysis and Design，2001，37（9）:687-712．
[17] Liu B L．Noise radiation of aircraft panels subjected to boundary layer pressure fluctuations[J]．Journal of Sound and Vibration，2008，314（3-5）：693-711．
[18] 唐锐．水下壳体结构低频声辐射预报方法与试验测试技术研究[D]．哈尔滨：哈尔滨工程大学，2013．
Tang Rui．The investigation on predicting and measuring the sound radiation of underwater shell structure in low frequency[D]．Harbin：Harbin Engineering University，2013．
[19] 谢志勇，周其斗，纪刚．双层柱壳的流固耦合模态计算与试验研究[J]．海军工程大学学报，2009，21（2）：97-101．
Xie Zhi-yong，Zhou Qi-dou，Ji-gang．Computation and measurement of double shell vibration mode with fluid load[J]．Journal of Naval University of Engineering，2009，21（2）：97-101．
[20] 缪旭弘，钱德进，姚熊亮，等．基于ABAQUS声固耦合法的水下结构声辐射研究[J]．船舶力学，2009，13（2）：319-324．
Miao Xu-hong，Qian De-jin，Yao Xiong-liang，et al．Sound radiation of underwater structure based on coupled acoustic-structural analysis with ABAQUS[J]．Journal of Ship Mechanics，2009，13（2）：319-324．
[21] Engquist B，Majda A．Absorbing boundary conditions for numerical simulation of waves[J]．Proceedings of the National Academy of Sciences，1977，74（5）：1765-1766．
[22] Givoli D．High-order local non-reflecting boundary conditions：a review[J]．Wave Motion，2004，39（4）：319-326．
[23] Spence R，Amaral-Teixeira J．Investigation into pressure pulsations in a centrifugal pump using numerical methods supported by industrial tests[J]．Computers & Fluids，2008，37（6）：690-704．
[24] Dai Cui，Kong Fan-yu，Dong Liang．Pressure fluctuation and its influencing factor analysis in circulating water pump[J]．Journal of Central South University，2013，20（1）：149-155．
[25] 袁银南，顾丽，李捷辉，等．柴油机气缸体组件的试验模态分析[J]．江苏大学学报(自然科学版)，2004，25(1):33-35．
Yuan Yin-nan，Gu Li，Li Jie-hui，et a．Experimental modal analysis on cylinder block assembly of diesel engine[J]．Journal of Jiangsu University （Natural Science Edition），2004，25（1）：33-35．