| 管道结构中含同轴穿孔管时的声传播特性 |
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| 引用本文： | 赵松龄,盛胜我.管道结构中含同轴穿孔管时的声传播特性[J].声学技术,1999,18(3):103-106. |
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| 作者姓名： | 赵松龄 盛胜我 |
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| 作者单位： | 同济大学声学研究所 |
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| 摘 要： | 本文着重分析研究管道结构中含同轴穿孔管时的声传播特性，借助成熟的管道声学理论对典型结构作了严格的分析，阐明了结构内的存在两种类型声波：一为普通的平面声波，声压的相位和振幅在穿孔管内外区域保持相同；另一为特殊的声波，它由于穿孔管壁的耦合作用而产生，其声压的相位在内外区域正好相反，而振幅与截面积成反比，并且波数也与平面波的波数有所不同。文中对含同轴穿孔管的一些典型结构，作了定量分析，导出进口界面上声阻
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| 关 键 词： | 管道声学 穿孔管 声阻抗 声传播特性 |
| 收稿时间： | 1999/3/2 0:00:00 |
| 修稿时间： | 1999/5/27 0:00:00 |
Sound propagation in tubular structure containing perforated coaxial pipe |
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| ZHAO Song-ling and SHENG Sheng-wo.Sound propagation in tubular structure containing perforated coaxial pipe[J].Technical Acoustics,1999,18(3):103-106. |
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| Authors: | ZHAO Song-ling and SHENG Sheng-wo |
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| Affiliation: | Institute of Acoustics, Tongji Univ., shanghai 200092;Institute of Acoustics, Tongji Univ., shanghai 200092 |
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| Abstract: | In this
paper, acoustical property of the tubular structure containing perforated coaxial pipe is
investigated rigorously based upon well developed sound propagation theory.It is shown there are
two different kinds of sound wave:One is the common plane wave.The other is special one caused
by coupling effect of the perforated pipe.The formulas to determine the acoustic impedance at the
inlet of typical structures are derived and discussed. |
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| Keywords: | duct acoustics perforated pipe acoustic impedance |
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