| 李亚,张楠,熊紫英,孙红星.大涡模拟预报螺旋桨辐射噪声的三种声学方法[J].声学技术,2017,36(5):461~466 |
| 大涡模拟预报螺旋桨辐射噪声的三种声学方法 |
| Numerical simulation of propeller noise based on LES combining three acoustic prediction methods |
| 投稿时间：2017-01-21 修订日期：2017-05-15 |
| DOI：10.16300/j.cnki.1000-3630.2017.05.011 |
| 中文关键词: 螺旋桨噪声 大涡模拟 FW-H声学类比 旋转偶极子辐射模型 涡声方程 |
| 英文关键词: propeller noise LES FW-H equation rotating dipole radiation model vertex sound |
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| 中文摘要: |
| 螺旋桨噪声是船舶的三大噪声源之一，研究螺旋桨的噪声现象具有很大的现实意义。首先划分了螺旋桨的结构化网格，进行了网格收敛性分析，然后采用大涡模拟方法计算螺旋桨水动力。在噪声计算中采用了FW-H方程、结合Virtual lab的旋转偶极子辐射、涡声方程三种方法进行预报，并与换算到自由场的试验结果进行对比分析。结果表明，采用大涡模拟可以预报螺旋桨的辐射噪声，三种方法均满足工程应用需求。 |
| 英文摘要: |
| The propeller noise is one of the three ship noise sources and very meaningful to study it. The structured grid of propeller is drawn firstly and mesh-convergence analysis is made. Then, LES is adopted to predict the propeller hydrodynamic performance. When predicting the radiation noise, three methods, such as FW-H equation, Virtual Lab rotating dipole radiation model and Powell vertex sound, are adopted. The computational results are in agreement well with experimental results. The results show that the LES combined with the three methods can predict propeller noise, and the three methods all satisfy the engineering application need. |
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