水下单层圆柱壳远场判据研究
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- 英文论文题名：Research on far field distance of underwater cylindrical shell
- 论文作者：胡宇安 ; 商德江 ; 肖妍 ; 刘永伟
- 英文论文作者：HU Yu-an ; SHANG De-jiang ; XIAO Yan ; LIU Yong-wei ; Acoustic Science and Technology Laboratory ; Engineering University ; College of Underwater Acoustics Engineering ; Harbin Engineering University
- 年：2016
- 作者机构：哈尔滨工程大学水声技术实验室;哈尔滨工程大学水声工程学院;
- 论文关键词：圆柱壳 ; 远场距离 ; 辐射声功率测试
- 英文论文关键词：cylindrical shell ; far field distance ; measurement of radiated sound power
- 会议召开时间：2016-10-28
- 会议录名称：2016年全国声学学术会议论文集
- 语种：中文
- 分类号：TB566
- 学会代码：OGSM
- 会议名称：2016年全国声学学术会议
- 会议地点：中国湖北武汉
- 主办单位：中国声学学会
- 学会名称：中国声学学会
- 页数：4
- 文件大小：368k
- 原文格式：D
- 会议级别：全国
摘要
长期以来对于水下结构的远场判定均采用刚性障板中平面活塞理论推导而得结果,对于其他形式的水下声源的远场规律少有描述。本文通过数值仿真研究了水下圆柱壳的指向性随距离变化的规律以及其声压随距离变化的规律。结果表明,依据指向性为标准的远场距离和依据声压为标准的远场距离结果相近,且比由平面活塞的远场距离经验公式计算的结果要小。研究结果对水下结构声源远场距离的规律和辐射声功率测试有一定的指导意义。
For a long time,the far field determination of underwater structures took plane piston theory as the reference.as for other forms of underwater structures, far field determination has not been studied.In this paper, the regularity of the directivity of the underwater cylindrical shell and the change of the sound pressure along with the distance are studied by numerical simulation. The results show that the both determination method of far field showed the similar results and both method showed that the far field distance of underwater cylindrical shell is less than the plane piston theory.The research results is significant to determine the far field distance of underwater structure sound source and the measurement of radiated sound power.
For a long time,the far field determination of underwater structures took plane piston theory as the reference.as for other forms of underwater structures, far field determination has not been studied.In this paper, the regularity of the directivity of the underwater cylindrical shell and the change of the sound pressure along with the distance are studied by numerical simulation. The results show that the both determination method of far field showed the similar results and both method showed that the far field distance of underwater cylindrical shell is less than the plane piston theory.The research results is significant to determine the far field distance of underwater structure sound source and the measurement of radiated sound power.
引文
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[2]曾革委,吴崇健.加肋圆柱壳舱段水下声辐射试验研究[J].中国舰船研究,2006,1(01):13-16.Zeng Ge—wei Wu Chong—jian.Research on the Model Test of Underwater Sound Radiation for a Ring Stiffened Cylinder
[3]何祚镛,赵玉芳.声学理论基础[M].国防工业出版社,1981年.
[4]赵其昌.线阵列扬声器系统的远场条件[J].演艺设备与科技.2005(06)
[5]张明敏,卢建斌,席泽敏.波动声场中的远场条件[J].声学技术,2011;30(4);pt.2:1-3
[6]高岩,李兵,戴江.圆柱壳结构模型水下辐射声功率测量方法研究.船舶力学2010,14(10):1189-1194.
[7]Brebbia C A,Telles J C F,Wrobel L C.Boundary element technique theory and applications in engineering[M].Berlin Herdelberg:Springer-Verlag,1984.