靳帅楠, 靳国永, 叶天贵, 等. 船艏声呐平台自噪声预报及综合控制[J]. 中国舰船研究, 2022, 18(增刊 1): 1–9. doi: 10.19693/j.issn.1673-3185.02466
引用本文: 靳帅楠, 靳国永, 叶天贵, 等. 船艏声呐平台自噪声预报及综合控制[J]. 中国舰船研究, 2022, 18(增刊 1): 1–9. doi: 10.19693/j.issn.1673-3185.02466
JIN S N, JIN G Y, YE T G, et al. Predication and comprehensive control of self-noise of ship's sonar platform[J]. Chinese Journal of Ship Research, 2022, 18(Supp 1): 1–9. doi: 10.19693/j.issn.1673-3185.02466
Citation: JIN S N, JIN G Y, YE T G, et al. Predication and comprehensive control of self-noise of ship's sonar platform[J]. Chinese Journal of Ship Research, 2022, 18(Supp 1): 1–9. doi: 10.19693/j.issn.1673-3185.02466

船艏声呐平台自噪声预报及综合控制

Predication and comprehensive control of self-noise of ship's sonar platform

  • 摘要:
      目的  旨在研究船艏声呐平台自噪声的预报及其控制问题,
      方法  采用统计能量分析(SEA)法建立基于整船模型的船艏声呐平台自噪声预报分析模型,基于预报结果,研究通过铺设吸声尖劈、聚氨酯材料和设置凹角型声学障板等对声呐平台自噪声的影响以及采用综合降噪措施的控制效果,最后,从材料和结构形式这两个方面探讨透声窗对流激噪声的影响。
      结果  结果表明,在非透声界面铺设吸声尖劈一定程度上可降低声呐平台自噪声,铺设聚氨酯材料可有效降低机械噪声,但对于流激噪声和螺旋桨噪声的降噪效果相对较小。设置凹角型声学障板可有效控制机械噪声和螺旋桨噪声。相比于等厚度的单层玻璃透声窗,钛合金夹芯式透声窗能更好地抑制流激噪声。
      结论  研究结果可为船艏声呐平台降噪设计提供理论依据与数据支撑。

     

    Abstract:
      Objectives  This paper aims to solve the problem of the prediction and control of the bow sonar self-noise.
      Methods  The self-noise simulation model of the ship's sonar platform based on the entire ship was established using the statistical energy analysis (SEA). Based on the prediction results, the noise reduction effect of laying sound absorption wedge, polyurethane, and setting a concave-shaped acoustic baffle on the self-noise was studied. The effects of sound transmission window on flow-induced noise are discussed from two aspects, i.e., material and structure.
      Results  The results show that the bow sonar self-noise can be reduced to a certain extent by laying sound absorption wedge on the non-transparent interface, and the mechanical noise of bow sonar can be effectively reduced by laying polyurethane material, while the noise reduction effect of flow induced noise and propeller noise is relatively small. The mechanical noise and propeller noise in bow sonar can be effectively controlled by setting concave angle acoustic baffle. Compared with the single-layer glass window with the same thickness, the sandwich titanium alloy window can better suppress the flow induced noise in the bow sonar platform.
      Conclusions  The simulation results can provide theoretical basis and data support for noise reduction design of bow sonar platform.

     

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