| 流动管道内反声降噪数值研究 |
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| 引用本文： | 朱之墀, 黄振华, 何桢. 流动管道内反声降噪数值研究[J]. 声学学报, 1994, 19(2): 81-91. DOI: 10.15949/j.cnki.0371-0025.1994.02.001 |
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| 作者姓名： | 朱之墀 黄振华 何桢 |
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| 作者单位： | 清华大学 |
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| 基金项目： | 国家自然科学基金,国家教委博士点基金 |
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| 摘 要： | 本文用流体力学方法建立了流动管道内反声降噪数值方法,其中,严格推导了反声源的数学模型.本文还给出了产逆流和声顺流传播时管内声场反声影响的数值算例,并讨论了流动速度、反声源强度和相位的影响.算例表明:反声降噪具有很好的工程应用前景.
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| 收稿时间： | 1992-08-24 |
A numerical study of noise reduction in ducts with flow by anti-sound |
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| ZHU Zhi-chi, HUANG Zhen-hua, HE Zhen. A numerical study of noise reduction in ducts with flow by anti-sound[J]. ACTA ACUSTICA, 1994, 19(2): 81-91. DOI: 10.15949/j.cnki.0371-0025.1994.02.001 |
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| Authors: | ZHU Zhi-chi HUANG Zhen-hua HE Zhen |
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| Abstract: | Using measures adopted in fluid mechanics, a numerical method of noisereduction in duct with flow by anti-sound is established,in which a mathematical anti-soundmodel is deduced strictly. Several numerical examples are given out in cases of backward andforward sound propagation to illustrate the influence of anti-sound on sound field in duct andto discuss the effects of intensity,phase angle of anti-sound sources and flow velocity. It isshown that noise reduction by anti-sound dose have a bright prospect in engineeringapplication. |
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