| 烟火药水下燃烧的声辐射机理与实验研究（英文） |
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| 引用本文： | 欧阳的华,关华,潘功配,杜雪峰.烟火药水下燃烧的声辐射机理与实验研究（英文）[J].气动实验与测量控制,2010(5):74-78. |
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| 作者姓名： | 欧阳的华 关华 潘功配 杜雪峰 |
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| 作者单位： | 南京理工大学化工学院,江苏南京210094 |
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| 基金项目： | 2009年江苏省普通高校研究生科研创新计划项目（CX09B-105Z）; 国家部委基金资助项目（51305090302） |
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| 摘 要： | 烟火药水下燃烧能够形成低频的水下声。法国烟火集团拉克鲁瓦防御公司研制出了一种＂烟火——声电＂声诱饵（1995）,但是至今还没有进行深入的研究与报道。本文就烟火药水下燃烧的声辐射机理进行了探讨。结果显示,其所辐射的噪声主要包括喷注噪声和气泡噪声,进一步的分析发现主要以气泡噪声为主,喷注湍流噪声为辅。为了证明此观点,实验研究了具有脉动燃烧效应的烟火药水下燃烧时的声辐射特性。
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| 关 键 词： | 烟火药 声辐射机理 湍流噪声 脉动燃烧 |
Mechanism and experimental research on acoustic radiation of pyrotechnic composition combustion underwater |
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| Authors: | OUYANG De-hua GUAN Hua PAN Gong-pei DU Xue-feng |
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| Institution: | (School of Chemical Engineering,Nanjing University of Science ＆ Technology,Nanjing 210094,China) |
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| Abstract: | The combustion of pyrotechnic composition underwater has ability to form a low-frequency underwater sound signal.The French defense company of Lacroix pyrotechnic Group developed a ＂pyrotechnic-acoustic transmitter＂ in 1995.However,until now this investigation has not been extensively studied and reported.In this paper,the research of mechanism of the acoustic radiation for pyrotechnic composition combustion underwater was conducted.The results show that the emission noise mainly includes turbulence noise and breakdown bubble noise.The further investigation also revealed that the breakdown bubble noise has the dominant effect comparing with the turbulent noise.In order to prove this viewpoint,the underwater combustion of pyrotechnic composition with pulsating combustion effect was studied through a deep experimental investigation. |
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| Keywords: | pyrotechnic composition acoustic radiation mechanism turbulence noise pulsating combustion |
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