| 基于声全息法的水下复杂圆柱壳体远场辐射声场计算及试验验证 |
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| 引用本文： | 刘文章,严斌,吴文伟.基于声全息法的水下复杂圆柱壳体远场辐射声场计算及试验验证[J].船舶力学,2017(Z1). |
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| 作者姓名： | 刘文章 严斌 吴文伟 |
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| 作者单位： | 中国船舶科学研究中心船舶振动噪声重点实验室,江苏无锡,214082 |
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| 基金项目： | 国家"十三五"重点专项:国家质量基础的共性技术研究与应用 |
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| 摘 要： | 针对水下圆柱壳体结构,采用声全息技术建立了由近场声预报远场辐射噪声的方法.在波数域内对近场声与远场辐射噪声的关系展开分析,建立了结合近场声信息提高远场辐射噪声特征分析及评估精度的工程实用化方法.通过加肋圆柱壳的算例验证了方法的正确性,为方法的实际应用提供理论指导.结合模型试验的结果对方法进行了进一步的对比验证.
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| 关 键 词： | 声全息法 圆柱壳体 水下辐射噪声 远场辐射噪声 试验验证 |
Calculation and experiment verification of far-field radiated noise for underwater complicated cylindrical shell through NAH |
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| LIU Wen-zhang,YAN Bin,WU Wen-wei.Calculation and experiment verification of far-field radiated noise for underwater complicated cylindrical shell through NAH[J].Journal of Ship Mechanics,2017(Z1). |
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| Authors: | LIU Wen-zhang YAN Bin WU Wen-wei |
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| Abstract: | For underwater cylindrical shell, the method of near acoustic holography (NAH) is used to predict the far-field radiated noise from the near-field noise. Based on the analysis of the relationship between the near field noise and the far field radiated noise in the wavenumber domain, a practical method for the analysis and evaluation of the far-field radiated noise with the near-field noise is presented. The method is verified by a numerical example of stiffened cylindrical shell, which provides theoretical guidance for practical application of the method. The verification is carried out with the comparison between the results of the model experiment and the ones of the method. |
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| Keywords: | NAH cylindrical shell underwater radiated noise far-field experiment verification |
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