| 邹锦芝,涂英,陈丹平,蔡惠智.矢量拖曳阵水听器流噪声探讨[J].声学技术,2009,(4):454~458 |
| 矢量拖曳阵水听器流噪声探讨 |
| Investigation of the flow-induced noise of vector hydrophone in towed array |
| 投稿时间：2008-07-18 修订日期：2008-10-28 |
| DOI： |
| 中文关键词: 拖曳阵声纳 流噪声 二维同振柱形矢量水听器 |
| 英文关键词: towed array sonar flow noise two-dimensional resonant-column type vector hydrophone |
| 基金项目: |
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| 摘要点击次数: 1268 |
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| 中文摘要: |
| 拖曳阵声纳的左右舷模糊是实际应用中需要解决的问题。采用矢量水听器可以较好地解决此问题。采用波数-频率谱方法讨论同振柱形矢量水听器的流噪声。根据圆柱套管外壁湍流边界层的特点和同振柱形矢量水听器的工作原理,导出矢量水听器的声压通道和振速通道的噪声功率谱。通过数值积分法估计了流噪声功率谱与护套尺寸、水听器尺寸和拖曳速度等参数的关系。针对同振柱形矢量水听器的特点,所得结果有实际参考价值。 |
| 英文摘要: |
| The ‘left/right ambiguity’ problem inherent in traditional towed array sonar must be solved in practical application. Using vector hydrophones in towed array can solve the problem. A method in the wavenum-ber-frequency field spectrum is applied to discussing the flow noise of resonant-column type vector hydrophone. Acoustic pressure and velocity power spectrum of flow noise are calculated for a single vector hydrophone according to flow noise sound field expression in the interior fluid of vector towed array and the working theory of two-dimensional resonant-column type vector hydrophone. The relations between power spectrum of flow noise and dimension of jacket, size of hydrophone and towed speed are estimated with numerical results. With the resonant-column vector hydrophone characteristics, the results shown in this paper are practically useful. |
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