为了研究流水孔对双壳体潜艇流激噪声产生的影响，基于CFD数值仿真方法，采用SST-SAS模型计算SUBOFF标模的非定常流场，对比SUBOFF标模试验验证了流场计算方法的准确性，在此基础上，计算了开设相同面积的正方形孔、圆形孔以及菱形孔等3种开孔方案的锥-柱-球双壳体模型的非定常流场，在LMS Virtual Lab中基于声振耦合方法计算壳体表面向外辐射的流激噪声。选取总辐射声功率最小的正方形孔作为研究对象，分析开孔对流场脉动压力及流速特性的影响，研究不同开孔位置及分布对潜艇近、远场流激噪声的影响。研究结果表明，开孔会增加潜艇整体流激噪声声压级；在5 m/s的航速下，艇体表面开设均匀流水孔导致潜艇的远场与近场流激噪声声压级有不同程度的增加，开孔侧最大增量约有20 dB。
In order to study the influence of water holes on the flow-induced noise of double-hull submarines, based on CFD numerical simulation method, the unsteady flow field of SUBOFF standard mold was calculated by SST-SAS model. The accuracy of the flow field calculation method was verified by comparison with SUBOFF standard mold test. On this basis, the unsteady flow field of cone-column-ball double shell model with three opening schemes including square hole, circular hole and diamond hole of the same area was calculated. The fluid induced noise radiated from the shell surface was calculated in LMS Virtual Lab based on acoustic and vibration coupling method. The square hole with the smallest total radiated sound power was selected as the research object to analyze the effect of the opening hole on the flow field pulsation pressure and flow velocity characteristics, and the effect of different opening positions and distributions on the near and far field flow induced noise of submarine was studied. The results show that the opening of the hole will increase the sound pressure level of the overall flow-induced noise of the submarine. At a speed of 5 m/s, the opening of uniform water holes on the surface of the hull leads to the increase of the sound pressure level of the far-field and near-field flow-induced noise of the submarine to varying degrees, and the maximum increment on the opening side is about 20 dB.
2025,47(1): 124-132 收稿日期：2024-3-13
DOI：10.3404/j.issn.1672-7649.2025.01.022
分类号：U674.76
基金项目：国家自然科学基金资助项目（52241102）
作者简介：胡潇(2000-),男,硕士研究生,研究方向为振动与噪声控制
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