尾流中双气泡声学特性的有限元分析

张 群; 王英民

doi:10.11993/j.issn.1673-1948.2012.02.017

尾流中双气泡声学特性的有限元分析

doi: 10.11993/j.issn.1673-1948.2012.02.017

张群,
王英民

西北工业大学航海学院, 陕西西安, 710072

详细信息

作者简介:
张群(1981-), 男, 在读博士, 研究方向为舰船尾流的主动声特性.

中图分类号: TJ630.34; O427.4; TJ631.5
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- 文章访问数: 1522
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- 被引次数: 0
出版历程
- 收稿日期: 2011-10-23
- 修回日期: 2011-12-28
- 刊出日期: 2012-04-20

Finite Element Analysis on Acoustic Characteristic of Double Bubble in Ship Wake

College of Marine Engineering, Northwestern Polytechnical University, Xi′an 710072, China

摘要

摘要: 舰船尾流的声学特性是尾流的主要特性之一, 而气泡是形成尾流声学特性的主要原因。通过对尾流单个气泡的主动声学特性分析, 建立了气泡的弹性球壳主动声反射/散射特性模型。结合对不同半径气泡声学特性及气泡在尾流中分布的分析, 建立了双气泡的结构模型。通过有限元分析模型在周期载荷作用下位移随频率的变化, 得到气泡的谐振频率, 计算双气泡在主动入射声源作用下的场点分布, 得到双气泡的主动声反射/散射特性。
- 舰船尾流 /
- 双气泡 /
- 声学特性 /
- 有限元分析
Abstract: Acoustic characteristic, which mainly depends on bubble, is one of the most important characteristics of ship wake. In this paper, the active acoustic characteristic of single bubble in ship wake is analyzed, and an elastic sphere shell′s active acoustic reflection / scattering characteristic model of single bubble is established. A finite element model of double bubble is also set up combining the acoustic characteristic of bubble in different radius and the distribution analy-sis of bubbles in ship wake. Finite element analysis method is used to analyze the displacement varying with frequency under cyclic loading condition, thus the bubbles′ resonant frequencies are obtained. The distribution of double bubble field under incident active sound source is computed to obtain the active acoustic reflection / scattering characteristic of double bubble.
- ship wake /
- double bubble /
- acoustic characteristic /
- finite element analysis

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参考文献(7)

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