本文以三维刚性圆柱为研究对象，开展了基于大涡模拟和Lighthill声类比理论的混合数值模拟方法研究，确定了合适的声学计算模型参数。结合噪声频域特性和声学指向性，对比分析了不同雷诺数（Re=4.3×104、Re=1.0×105、Re=1.8×105和Re=2.5×105）、不同间距比（L/D=2、3、4和5）和不同排列方式（串联、并联和交错45°）下有限高单圆柱及双圆柱的水动力噪声特性，讨论了雷诺数、间距比以及排列方式对圆柱绕流水动力噪声的影响，为实现水下钝体和航行器流噪声的精确预报提供了详细的数值模拟方法指导。
The hybrid method based on large eddy simulation (LES) and Lighthill's acoustic analogy theory is conducted to solve the hydrodynamic noise for a three-dimensional circular cylinder.The influences of different simulation models on the flow results and the acoustic results are analyzed and the simulation accuracy of the hydrodynamic noise in underwater structures is evaluated, which provides the technical means for accurate noise prediction of underwater vehicles. the influence of Reynolds number, pitch ratio and arrangement method on the flow induced noise of underwater single/double cylinders is calculated and analyzed by the hybrid method.The study is able to provide a detailed guidance basis for the investigation of the hydrodynamic noise of underwater bluff body.
2019,41(6): 120-124,128 收稿日期：2018-06-07
DOI：10.3404/j.issn.1672-7649.2019.06.025
分类号：TB12
作者简介：张小锋(1994-),男,硕士研究生,研究方向为流噪声
参考文献：
[1] GOVARDHAN R, WILLIAMSON C H K. Modes of vortex formation and frequency response of a freely vibrating cylinder[J]. Journal of Fluid Mechanics, 2000, 420:85-130
[2] YOU D, CHOI H, CHOI M R, et al. Control of flow-induced noise behind a circular cylinder using splitter plates[J]. AIAA Journal, 1998, 36(11):1961-1967
[3] 贲安庆.圆柱绕流的数值模拟及其稳定性研究[D]. 大连:大连理工大学, 2015.
[4] 段志强. 低雷诺数下尾部隔板影响圆柱绕流的数值研究[D]. 重庆:重庆大学, 2012.
[5] 方媛媛. 三维圆柱体绕流数值模拟流场选择及网格划分[J]. 水道港口, 2009(1):70-76
[6] 张翰钦, 陈明, 孙国仓. 圆柱绕流噪声预报的流场与声场模拟方法对比研究[J]. 噪声与振动控制, 2016, 36(3):26-31
[7] 贾晓荷. 单圆柱及双圆柱绕流的大涡模拟[D]. 上海:上海交通大学, 2008.
[8] ZDRAVKOVICH M M. Flow around circular cylinders. Fundamentals, 1997, 1.
[9] KALTENBACHER M, ESCOBAR M, BECKER S, et al. Numerical simulation of flow-induced noise using LES/SAS and Lighthill's acoustic analogy[J]. International Journal for Numerical Methods in Fluids, 2010, 63(9):1103-1122
