CFD数值模拟技术可以为船舶水下噪声水平和噪声传播提供高精度的预报，同时还可以洞察船体绕流场的变化。本文利用VOF方法与SSTκ-ω两方程湍流模型用于求解船舶非定常粘性流场，并结合FW-H方程进行噪声传播。基于Lighthill声类比理论，对不同球鼻首船型的噪声进行数值计算，对船体流噪声的空间指向性、近远场分布特性进行分析。计算结果表明，CFD技术可以用于模拟分析船舶的绕流场和流致发声问题，能够为低噪声船体线型设计提供参考。
CFD numerical simulation technologies can provide highly accurate predictions for underwater noise level and noise propagation of ships, as well as giving insight into the changes ofhull flow field. In this paper, the VOF method and SSTκ-ω two-equation turbulence model were used to solve the unsteady viscous flow field of ships, and coupled with the FW-H equation for noise propagation. According to the Lighthill theory, the acoustic numerical calculation about different bulbous bow ship types was carried out, and the spatial directivity and near-far field distribution characteristics of hull flow noise were analyzed. The results showed that CFD technology could be used to simulate and analyze the flow field around the ships and problem of flow-induced noise, could provide reference for the design of low-noise hull lines.
2019,41(10): 63-69 收稿日期：2019-03-30
DOI：10.3404/j.issn.1672-7649.2019.10.012
分类号：U661.1
基金项目：高技术船舶科研资助项目；国防基础科研资助（51310040203）
作者简介：刘波(1977-),男,博士,高级工程师,主要从事船舶振动噪声研究检测与分析研究
参考文献：
[1] ZEBIB. Stability of viscous flow past a circular cylinder[J]. Journal of Chemistry, 2007(2):21-22
[2] AHMED Y, GUEDESSOARES C. Simulation of free surface flow around a VLCC hull using viscous and potential flow methods[J]. Ocean Engineering, 2009, 36:691-696
[3] AHMED Y. Numerical simulation for the free surface flow around a complex ship hull form at different Froude numbers[J]. Alexandria Engineering Journal, 2011(50):229-253
[4] LIGHTHILL M.J On sound generated aerodynamically.Ⅰ. general theory[J]. Proceedings of the Royal Society of London(Series A), 1952, 211(1107):564-587
[5] LIGHTHILL M.J On sound generated aerodynamically. Ⅱ. turbulence as a source of sound[J]. Pcoceedings of the Royal Society of London(Series A), 1954, 222(1148):1-32
[6] PAULA K, OSMAN T, ATILLAINCECIK. A study of numerical ship underwater noise prediction[J]. Ocean Engineering, 2013(66):113-120
[7] 曾文德, 王永生, 杨琼方. 全附体潜艇流噪声数值计算[J]. 兵工学报, 2010, 31(9):1204-1208
[8] WEI Ying-san, WANG Yong-sheng, DING Ke, et al. Submarine underwater structure-borne noise and flow noise due to propeller excitation[J]. Acoustics Australia, 2012, 40(2):122-127
[9] 王福军. 计算流体动力学分析[M]. 北京:清华大学出版社, 2004.
[10] 高霄鹏.舰艇水动力噪声的数值分析与拖曳模测试技术研究[D]. 上海:上海交通大学, 2008.
[11] 孟生, 张宇文, 王艳峰. 潜艇流水孔流噪声特性研究[J]. 计算机仿真, 2011, 28(7):57-62
[12] 王之程, 等. 舰船噪声测量与分析[M]. 北京:国防工业出版社, 2004.
[13] 孙权. 水下航行体流致噪声的数值研究[D]. 武汉:武汉理工大学, 2014.
[14] 孟堃宇. 基于大涡模拟的潜艇脉动压力与流噪声性能数值计算[D]. 上海:上海交通大学, 2011.
