水下活塞式声源传播特性仿真研究
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- 英文论文题名：Propagation property simulation of underwater piston sound source
- 论文作者：张亮永 ; 郑辉 ; 刘阳 ; 方厚林 ; 张芳
- 英文论文作者：ZHANG Liang-yong ; ZHENG Hui ; LIU Yang ; FANG Hou-lin ; ZHANG Fang ; Northwest Institute of Nuclear Technology
- 年：2016
- 作者机构：西北核技术研究所;
- 论文关键词：活塞声源 ; 传播特性 ; 声损失 ; 几何扩展
- 英文论文关键词：piston sound source ; propagation property ; sound attenuation ; geometrical spreading
- 会议召开时间：2016-08-21
- 会议录名称：2016’中国西部声学学术交流会论文集
- 语种：中文
- 分类号：TB561
- 学会代码：SXJS
- 会议名称：2016’中国西部声学学术交流会
- 会议地点：中国四川成都
- 主办单位：中国声学学会微声学分会、中国声学学会物理声学分会、陕西省声学学会、浙江省声学学会、山东省声学学会、上海市声学学会、黑龙江省声学学会、水声技术重点实验室、重庆市声学学会、西安市声学学会、四川省声学学会
- 学会名称：《声学技术》编辑部
- 页数：3
- 文件大小：723k
- 原文格式：D
- 会议级别：全国
摘要
声波在水下传播时,由于波阵面几何扩展和海水的声吸收和散射造成声损失,从而影响了声波的有效传播。本文基于水下活塞声源的辐射声场,结合Thorp的水下声衰减公式,对活塞声源在不同传播距离和不同信号频率的声场情况进行了理论分析和数值仿真。研究结果表明,传播距离100 m以内各频率衰减很快,传播距离100 m之后,各频率衰减变得缓慢。传播距离大于400 m时,存在一个最优频率使得声波经过传播距离后的作用强度最高,该频率可作为声源频段选取的依据,对声源设计具有参考意义。
When sound waves propagate in water, sound waves will be affected because of the wave front geometrical spreading, sound absorption and sound scattering. Based on the radiation sound field of underwater piston sound source, and Thorp's sound attenuation formula, the sound field of piston sound source was analyzed theoretically and simulated with distance and frequency. The results show that when distance is no more than 100 m, the loss speed of sound energy is very fast with any frequency, and when distance is more than 100 m, the sound energy loss speed changes slowly. Furthermore, when the distance is more than 400 m, there is the optimum frequency at which the sound power reaches the peak. The results are very meaningful to the design of sound source.
When sound waves propagate in water, sound waves will be affected because of the wave front geometrical spreading, sound absorption and sound scattering. Based on the radiation sound field of underwater piston sound source, and Thorp's sound attenuation formula, the sound field of piston sound source was analyzed theoretically and simulated with distance and frequency. The results show that when distance is no more than 100 m, the loss speed of sound energy is very fast with any frequency, and when distance is more than 100 m, the sound energy loss speed changes slowly. Furthermore, when the distance is more than 400 m, there is the optimum frequency at which the sound power reaches the peak. The results are very meaningful to the design of sound source.
引文
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[2]Thorp W H.Analytic description of the low frequency attenuation coefficient[J].J.Acoust.Soc.Am.,1967,42:270.
[3]Urick R J.Sound propagation in the sea[M].Los Altos:Peninsula Publishing,1982.
[4]崔小明,何轲,雷开卓,等.水下窄脉冲超宽带信号的传播特性仿真[J].计算机测量与控制,2015,23(1):218-220.Cui Xiaoming,He Ke,Lei Kaizhuo,et al.Simulation of propagation properties of underwater narrow pulse and UWB signal[J].Computer Measurement&Control,2015,23(1):218-220.
[5]汪德昭,尚尔昌.水声学[M].北京:科学出版社,2013:18-23.Wang Dezhao,Shang Erchang.Hydroacoustics[M].Beijing:Science Press,2013:18-23.
[6]王德石.实用声呐工程[M].北京:电子工业出版社,2004:40-46.Wang Deshi.Sonar for practising engineers[M].Beijing:Publishing House of Electronics Industry,2004:40-46.
[7]蔡志明.水声建模与仿真[M].北京:电子工业出版社,2005:90-92.Cai Zhiming.Underwater acoustic modeling and simulation[M].Beijing:Publishing House of Electronics Industry,2005:90-92.
[8]杜功焕,朱哲民,龚秀芬.声学基础[M].南京:南京大学出版社,2001:344-362.Du Gonghuan,Zhu Zhemin,Gong Xiufen.Fundamentals of acoustics[M].Nanjing:Nanjing University Press,2001:344-362.