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。
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.
出处
《鱼雷技术》
2015年第1期61-65,共5页
Torpedo Technology
关键词
潜艇水下发射
海水喷流
噪声
仿真
submarine underwater launching
seawater jet
noise
simulation
