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谢骏 , 笪良龙 , 唐帅 . 舰船螺旋桨空化噪声建模与仿真研究 [J ] . 兵工学报 , 2013 , 34 ( 3 ): 294 - 300 . DOI: 10. 3969/ j. issn. 1000-1093. 2013. 03. 007 http://doi.org/10. 3969/ j. issn. 1000-1093. 2013. 03. 007 为了解决螺旋桨空化噪声的连续谱及其调制谱特性的建模与仿真问题,在对空化噪声 连续谱理论研究和实验分析的基础上,依据各空泡的崩溃时刻的随机性和准周期性及其辐射噪声 的波形结构,分4 种情况分别对各空泡辐射噪声的合成功率谱进行了理论分析,并进行了仿真验 证,提出了空化噪声连续谱的时域蒙特卡罗仿真模型;结合螺旋桨空化噪声时变特性的物理机理, 提出了螺旋桨空化噪声调制波形仿真算法。理论分析和仿真结果表明,螺旋桨空化噪声调制特性 频域不均匀性本质是空化噪声连续谱形状的不稳定性造成的。

XIE J , DA L L , TANG S . Modeling and simulation of vessel propeller cavitation noise [J ] . Acta Armamentarii , 2013 , 34 ( 3 ): 294 - 300 . (in Chinese) DOI: 10. 3969/ j. issn. 1000-1093. 2013. 03. 007 http://doi.org/10. 3969/ j. issn. 1000-1093. 2013. 03. 007 In order to solve the problem of modeling and simulation of continuous spectrum of propeller cavitation noise and its modulation spectrum characteristics, four circumstances are categorized to conduct theoretical analysis on synthetic power spectrum of each cavitation bubble noise, and to perform simula- tion tests based on theoretical study and test results on cavitation noise continuous spectrum, randomicity, psuedo - periodicity of collapse of each cavitation bubble, and the waveform of its radiated noise, during which time domain Monte Carlo simulation model is proposed for cavitation noise continuous spectrum. The theoretical analysis and simulation results both show that the frequency domain offset of propeller cav- itation noise modulation characteristics is resulted from instability of cavitation noise continuous spectrum shapes.

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何朝晖 , 龙云 , 韩承灶 , 等 . 非均匀流中E779A螺旋桨空化涡流演变及压力脉动数值分析 [J ] . 船舶力学 , 2023 , 27 ( 1 ): 36 - 44 .

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郭嫱 , 王宇 , 黄先北 , 等 . 喷水推进泵叶轮空化涡流的数值模拟研究 [J ] . 船舶力学 , 2022 , 26 ( 1 ): 30 - 37 .

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柯慧程 , 彭子龙 , 周富霖 , 等 . 船用螺旋桨静态声散射预报方法及特性 [J ] . 兵工学报 , 2024 , 45 ( 5 ): 1523 - 1533 . DOI: 10.12382/bgxb.2023.0017 http://doi.org/10.12382/bgxb.2023.0017 针对螺旋桨静态声散射特性预报问题,采用分层介质声传播理论与离散面元厚度信息相结合的板块元算法,建立变厚度曲面薄板目标声散射特性预报方法。基于面元厚度及材料属性信息求解所有面元的反射系数,进而求得目标的总散射声场。为了提高计算效率,通过单片桨叶网格拓扑克隆的方式实现完整螺旋桨的散射声场预报,并通过有限元和静态声散射特性湖上试验对新的预报方法的准确性进行了验证。研究结果表明:螺旋桨目标强度的频响特性、角度-距离谱以及空间指向性预报值与测试值基本一致。研究结果对水下航行器艉向附近的声散射特性预报具有一定的参考价值。

KE H C , PENG Z L , ZHOU F L , et al . Prediction method and characteristics of static acoustic scattering from marine propellers [J ] . Acta Armamentarii , 2024 , 45 ( 5 ): 1523 - 1533 . (in Chinese) DOI: 10.12382/bgxb.2023.0017 http://doi.org/10.12382/bgxb.2023.0017 For the prediction problem of static acoustic scattering characteristics of propellers, a planar element method combining the layered medium acoustic propagation theory and the discrete surface element thickness information is used to establish a prediction method for the acoustic scattering characteristics of thin plate targets with variable thickness surfaces.The basic idea is to solve the reflection coefficients of all surface elements based on the thickness of surface elements and material property information, and then obtain the total scattered acoustic field of the target. Considering the computational efficiency, the scattered sound field of a complete propeller is predicted by means of mesh topology clone from a single propeller blade. The results show that the predicted values of the frequency response characteristics, angle-distance spectrum and spatial directivity of propeller target strength are in general agreement with the experimental results. This study may be useful for the prediction of acoustic scattering characteristics near the stern of underwater vehicles.

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