潜艇水下武器发射后海水喷流噪声数值仿真

Simulation on Seawater Jet Noise after Submarine Underwater Launching

1.
Department of Weaponry Engineering, Naval University of Engineering, Wuhan 430033, China
2.
Department of Bal-listic Missile and Underwater Weapon, Naval Submarine Academy, Qingdao 266071, China

摘要: 为了研究武器发射出管后的海水喷流噪声, 将发射管比拟为水下圆管, 通过发射装置水下发射过程的3D流场仿真, 获取了武器出管后发射管口海水喷流的流场特性, 在此基础上采用基于Lighthill声学类比的积分方法对水下圆管自由喷流噪声进行了计算与分析。结果表明, 喷流噪声的能量主要集中在100 Hz以下的低频范围内, 水下武器发射后的海水喷流噪声源并不是总发射噪声的主要组成。
- 潜艇水下发射 /
- 海水喷流 /
- 噪声 /
- 仿真
Abstract: To study the noise of the seawater jet from a submarine launch tube after a weapon leaving the tube, simula-tion on three-dimensional flow field of the launching process is conducted, and the fluid field of the seawater jet at noz-zle after the weapon leaving the tube is obtained. The free jet noise of underwater round pipe is calculated using the Lighthill acoustic analogy integral method based on the seawater jet fluid characteristic. Calculation result shows that the energy of seawater jet noise concentrates in the low frequency noise (lower than 100 Hz), and the seawater jet noise is not the main component of the overall launching noise.
- submarine underwater launching /
- seawater jet /
- noise /
- simulation

[1]	练永庆, 王树宗. 武器发射装置设计原理[M]. 北京: 国防工业出版社, 2012: 65-66.
[2]	Issa R I. Solution of Implicitly Discredited Fluid Flow Equations by Operator Splitting[J]. Journal of Computa¬tional Physics, 1986(62): 40-65.
[3]	Tam C K W. Jet Noise: Since 1952[J]. Theoretical and Computational Fluid Dynamics. 1998, 10(1): 393-405.
[4]	李晓东, 江旻, 高军辉. 计算气动声学进展与展望[J]. 中国科学: 物理学力学天文学, 2014, 44(3): 234-248. Li Xiao-dong, Jiang Min, Gao Jun-hui. Progress and Pro-spective of Computational Aeroacoustics[J]. Scientia Sinica(Physica, Mechanica& Astronomica), 2014, 44(3): 234-248.
[5]	王春旭. 水下湍射流及壁面湍流噪声预报方法[D]. 武汉: 华中科技大学, 2009: 100-102.
[6]	Ffowcs W J E, Kempton A J. The Noise from the Large- scale Structure of a Jet[J]. Journal of Fluid Mechanics, 1978, 84(4): 673-694.
[7]	郭新毅, 马力. 环境变化条件下海洋环境噪声统计分析[C]//2010中国西部地区声学学术交流会. 云南: 中国声学学会, 2010: 338-341.