自主式水下航行器（Autonomous Underwater Vehicle，AUV）螺旋桨的运转通常是在非均匀流场中，其中以AUV航行时产生的尾部伴流为主。为了分析尾部伴流对螺旋桨水动力及噪声的影响，首先利用P 4119螺旋桨验证双向流固耦合数值模拟的可行性、准确性，其次建立AUV与B型图谱桨耦合模型，对比2种工况下螺旋桨动力性能与无空化噪声分布情况。结果表明，在AUV尾部不均匀的来流影响下，螺旋桨所需提供的推力和转矩有所提高，此增幅在最高时分别可以达到83.77%和50.50%；相较于1倍叶频时伴流对螺旋桨噪声的微弱影响，2倍和3倍叶频时螺旋桨噪声在各个监测点的声压级相较均匀来流衰减了20～50 dB，并且导致2倍叶频时螺旋桨噪声的分布呈现无规则形。
The operating conditions of AUV propeller are usually in non-uniform flow, which is mainly caused by stern companion flow during AUV sailing. Non-uniform flow in order to analysis influence on propeller hydrodynamic and noise, the P 4119 propeller was used to verify the feasibility and accuracy of the two-way fluid-structure coupling numerical simulation. Secondly, the AUV and B-type propeller coupling model was established to compare the propeller dynamic performance and no cavitation noise distribution under two working conditions. The results show under the influence of non-uniform incoming flow from AUV stern, the thrust and torque required by the propeller are improved, and the increase can reach 83.77% and 50.50% respectively at the highest point. Compared with the weak influence of the accompanying flow on the propeller noise at blade passing frequency, the sound pressure level of the propeller noise at each monitoring point at two and three times of blade passing frequency is attenuated by 20～50 dB compared with the uniform flow, and the distribution of propeller noise at two times of blade passing frequency presents an irregularity.
2024,46(12): 90-96 收稿日期：2023-08-28
DOI：10.3404/j.issn.1672-7649.2024.12.016
分类号：U664.33
基金项目：浙江省自然科学基金资助项目（LTGG23E090002）
作者简介：姜长乐(1999-),男,硕士,研究方向为水下机器人结构设计与优化
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