串列双圆柱绕流噪声计算方法对比研究  

Comparative Study on Calculation Methods of Flow Noise Around Two Cylinders in Tandem

作　　者：瞿尧 刘滟钰 王宁[1] 柴应彬 杨平 张咏鸥 QU Yao;LIU Yanyu;WANG Ning;CHAI Yingbing;YANG Ping;ZHANG Yongou(School of Naval Architecture,Ocean and Energy Power Engineering,Wuhan University of Technology,Wuhan 430061,China;Xingyun intelligent Entropy Technology Co.Ltd.,Beijing 100020,China)

机构地区：[1]武汉理工大学船海与能源动力工程学院,武汉430061 [2]星云智熵科技有限公司,北京100020

出　　处：《武汉理工大学学报（交通科学与工程版）》2021年第6期1091-1095,共5页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：国家自然科学基金(51809208);中央高校基本科研业务费专项资金(2018IVA032)。

摘　　要：文中以双圆柱绕流噪声为对象,采用相同湍流计算结果,对比了基于有限元求解变分形式声类比方程和基于面积分求解声类比方程两种不同的流噪声计算方法,并与试验结果进行了比较.流场采用标准k-ε模型定常计算作为初值,进行大涡模拟(LES)非定常计算,基于两种声类比方程的数值模拟方法计算雷诺数为1.66×10^(5)三维串列双圆柱绕流噪声.计算结果与试验值对比表明:两种计算方法都能很好地模拟串列圆柱绕流的声学特性,变分形式的声类比方程和面积分声类比方程的峰值频率和实验误差分别为1.1%和2.2%,三个监测点峰值声压级平均误差分别为4.5%和7.4%.变分形式声类比方程计算的峰值声压级和峰值频率更接近实验值,采用面积分方程计算结果在整体上与试验拟合较好.The noise generated by the protruding appendages such as antennas and pillars of ships sailing on the surface of water has an important influence on the crew’s working and living environment and the concealment of underwater vehicles during high-speed driving.In order to study the effectiveness of sound field prediction results of different flow noise calculation methods,two different flow noise calculation methods,namely,solving variational acoustic analogy equation based on finite element method and solving acoustic analogy equation based on area fraction method,were compared with the experimental results by using the same turbulence calculation results.Unsteady calculation of large eddy simulation(LES)was carried out by using steady calculation of standard k-εmodel as initial value.Two numerical simulation methods based on acoustic analogy equations are used to calculate the noise around three-dimensional tandem double cylinders when Reynolds number is 1.66×10^(5).The comparison between the calculated results and the experimental values shows that the two calculation methods can well simulate the acoustic characteristics of the flow around a tandem cylinder.The peak frequency and experimental errors of the variational acoustic analogy equation and the area acoustic analogy equation are 1.1%and 2.2%respectively,and the average errors of the peak sound pressure levels of the three monitoring points are 4.5%and 7.4%respectively.The peak sound pressure level and peak frequency calculated by the variational acoustic analogy equation are closer to the experimental values,and the results calculated by the area equation are in good agreement with the experimental results on the whole.

关 键 词：串列圆柱 大涡模拟 声类比 变分形式 面积分 

分 类 号：U661.44[交通运输工程—船舶及航道工程]