管阵列中不同位置的声源辐射特性

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• 英文论文题名：Different location acoustic radiation characteristics in tube arrays
• 论文作者：刘月超 ; 姜根山 ; 许伟龙 ; 崔淑媛
• 英文论文作者：LIU Yue-chao ; JIANG Gen-shan ; XU Wei-long ; CUI Shu-yuan ; North China Electric Power University
• 年：2016
• 作者机构：华北电力大学;
• 论文关键词：声子晶体 ; 管阵列 ; 声辐射特性
• 英文论文关键词：phononic crystals ; tube arrays ; acoustic radiation
• 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：O421.2
• 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：1067k
• 原文格式：D
• 会议级别：全国

摘要

本文基于声子晶体理论研究电站锅炉管阵列中不同位置的声源辐射特性。设定换热器管阵列的纵向节距与横向节距等几何参数,通过平面波展开法获得管阵列的声波带隙结构,将声源设置在管阵列中不同位置,选取特定的频率,通过COMSOL有限元计算得到声源的传播特性与辐射特性。结果表明:声辐射指向性特性与声源通过管排数量,声源频率是否处在声波禁带有关。研究管阵列中不同位置声源的辐射特性对管阵列中声源定位有重要意义。
Based on the phononic crystal theory, we study the different location acoustic radiation characteristics in power station tube arrays. We set the heat exchanger tube arrays parameters, such as longitudinal and horizontal pitch, etc. The tube arrays acoustic band structure is got by the plan wave expansion method. Setting the sound source in tube arrays different location, and selecting some specific frequencies, the acoustic propagation and radiation characteristics are got by COMSOL. The results show that the acoustic radiation directivity not only have relation with the sound through the tube row number, but also have relation with the frequency whether in the acoustic bang gap. This study has important significance for the acoustic location in tube arrays.

引文

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