| 湍流脉动压力下椭球声呐腔水动力自噪声分析 |
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| 引用本文： | 彭华康, 李天匀, 朱翔. 湍流脉动压力下椭球声呐腔水动力自噪声分析[J]. 中国舰船研究, 2011, 6(4): 37-42. DOI: 10.3969/j.issn.1673-3185.2011.04.008 |
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| 作者姓名： | 彭华康 李天匀 朱翔 |
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| 作者单位： | 华中科技大学船舶与海洋工程学院,湖北武汉430074 |
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| 基金项目： | 国家自然科学基金资助项目(40976058) |
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| 摘 要： | 运用统计能量法建立水下椭球壳形状的声呐腔模型。利用计算流体动力学软件计算不同航速下声呐罩表面湍流边界层的分离点,考虑了湍流脉动压力空间分布的不均匀性。分析航速以及不同吸声和阻尼处理方案对声呐腔水动力自噪声的影响。理论评估吸声处理的结果和数值计算的结果比较吻合。研究表明：航速越大,自噪声越大;透声窗面积所占总表面积的比例越小,吸声和阻尼处理的降噪效果越明显;吸声和阻尼处理在中高频段降噪效果更好。研究结果为水下声呐腔水动力自噪声预报和控制提供了参考。
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| 关 键 词： | 统计能量分析 声呐腔 湍流脉动压力 水动力自噪声 |
| 收稿时间： | 2010-07-13 |
| 修稿时间： | 2010-09-01 |
Self Noise of Hydrodynamic Component for Ellipsoid-Shaped Sonar Cavity Induced by Turbulent Fluctuating Pressure |
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| Peng Huakang, Li Tianyun, Zhu Xiang. Self Noise of Hydrodynamic Component for Ellipsoid-Shaped Sonar Cavity Induced by Turbulent Fluctuating Pressure[J]. Chinese Journal of Ship Research, 2011, 6(4): 37-42. DOI: 10.3969/j.issn.1673-3185.2011.04.008 |
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| Authors: | Peng Hua-kang Li Tian-yun Zhu Xiang |
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| Affiliation: | College of Naval Architecture and Ocean Engineering,Huazhong University of Science and Technology, Wuhan 430074,China |
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| Abstract: | An underwater ellipsoid-shaped sonar cavity model was created by SEA method.The separation position of turbulent boundary layer was calculated with different flow speeds by CFD software,and the spatial distribution of non-uniform for turbulent fluctuating pressure was considered.This paper analyzed the influence of flow speeds and different absorption and damping coatings on the sonar flow-induced self noise.The results of theoretical evaluation for absorption coating agreed with the numerical results.It sh... |
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| Keywords: | statistical energy analysis sonar cavity turbulent fluctuating pressure flow-induced self noise |
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