邮轮烟囱排气管路气动噪声影响因素分析及预报  

Analysis of influencing factors and prediction of aeroacoustic noise induced by cruise chimney exhaust pipelinene

作　　者：黄震阳 吴卫国[2] 林永水[1] 陈聪 王一飞 曹晓飞 王昭予 HUANG Zhenyang;WU Weiguo;LIN Yongshui;CHEN Cong;WANG Yifei;CAO Xiaofei;WANG Zhaoyu(School of Science,Wuhan University of Technology,Wuhan 430070,China;Green&Smart River-Sea-Going Ship Cruise and Yacht Research Center,Wuhan University of Technology,Wuhan 430063,China;CSSC Cruise Technology Development Co.,Ltd.,Shanghai 200137,China;China Ship Development and Design Center,Wuhan 430064,China)

机构地区：[1]武汉理工大学理学院,湖北武汉430070 [2]武汉理工大学绿色智能江海直达船舶与邮轮游艇研究中心,湖北武汉430063 [3]中船邮轮科技发展有限公司,上海200137 [4]中国舰船研究设计中心,湖北武汉430064

出　　处：《中国舰船研究》2024年第5期245-253,共9页Chinese Journal of Ship Research

摘　　要：[目的]旨在分析邮轮烟囱排气管路气动噪声的影响因素,并对某国产邮轮开敞区域进行噪声预报。[方法]基于大涡模拟和Lighthill声类比的混合方法,对邮轮实际工况下的管路气动噪声进行数值模拟,研究入口流速、出口压力、截面形状和弯管角度对管路气动噪声的影响规律;建立实尺寸邮轮烟囱排气管路模型,分析邮轮烟囱排气管路主要噪声源,并对开敞区域进行噪声预报。[结果]结果显示,入口流速和弯管角度越大,管路气动噪声越大;零压力出口边界的管路气动噪声大于非零压力出口边界的管路气动噪声;矩形截面管气动噪声小于圆形截面管气动噪声;管路气动噪声的窄带峰频率随弯管角度的增大而减小;除烟囱出口外,开敞区域的气动噪声均处于较低水平。[结论]所做研究对控制邮轮烟囱排气管路气动噪声和改善开敞区域的舒适度具有一定的参考价值。[Objectives]This study analyzes the influencing factors of the aeroacoustic noise of cruise ship chimney exhaust pipelines,and predicts the noise level in the open area of a domestic cruise ship.[Methods]A hybrid approach combining Large Eddy Simulation and Lighthill Analogy is used to conduct a numerical simulation of the pipeline’s aeroacoustic noise under the actual working conditions of a cruise ship.The impacts of the inlet flow rate,outlet pressure,cross-section shape and bending angle on the aerodynamic noise are studied.A real-size cruise ship chimney exhaust pipeline model is then established to analyze the main noise sources and predict the noise level in the open areaa.[Results]The results show that the larger the inlet velocity and bending angle,the greater the aeroacoustic noise.Furthermore,the aeroacoustic noise of a pipeline with a zero pressure-outlet is greater than that with a non-zero pressure-outlet.It is also found that the aeroacoustic noise of a rectangular cross-sectional pipeline is marginally smaller than that of a circular one.In addition,the narrowband peak frequency decreases as the bending angle increases.Except for the chimney outlet,the noise level in the open area is low.[Conclusions]This study has significant reference value for controlling the aeroacoustic noise of cruise ship chimney exhaust pipelines and improving passenger comfort in open areas.

关 键 词：邮轮 烟囱排气管路 气动噪声 噪声预报 

分 类 号：U661.44[交通运输工程—船舶及航道工程]