哈尔滨工程大学学报Issue(1)：91-97,7.DOI:10.3969/j.issn.1006-7043.201309076
LES和无限元耦合方法预报螺旋桨均匀流噪声
Prediction of propeller noise in steady flow based on combining LES and I-FEM
摘要
Abstract
In order to get the numerical noise prediction method for an underwater propeller, a method combining the large eddy simulation ( LES) with the infinite element method ( I⁃FEM) was used to predict the frequency do⁃main noise of the propeller in steady flow. The open water performance and pressure distribution on the surface of blade are calculated and compared with experimental data, which validated the accuracy of the proposed calculation scheme. Furthermore, the pulsating pressure amplitude at each feature point was derived by analyzing the pulsating pressure of flow field around the propeller, respectively. In the analysis of propeller noise, the peak information of each order blade frequency of propeller can be derived from sound pressure spectrum at feature points, and the o⁃verall sound pressure level ( SPL) is close to SPL of BPF. From the comparison of the sound pressure contours of propeller noise, it can be seen that the propeller noise in steady flow is mainly composed of monopole noise and di⁃pole noise, among which monopole noise is the main part. This method can predict the hydrodynamic noise of pro⁃peller in uniform flow accurately, providing a feasible scheme for noise prediction in actual engineering application.关键词
大涡模拟/无限元方法/结构化网格/均匀流/螺旋桨/水动力性能/噪声性能Key words
propeller noise/steady flow/LES/I-FEM/structural grid/uniform flow/propeller/hydrodynamic per-formance/noise performanc分类
交通工程引用本文复制引用
王超,张立新,郑小龙,魏胜任..LES和无限元耦合方法预报螺旋桨均匀流噪声[J].哈尔滨工程大学学报,2015,(1):91-97,7.基金项目
国家自然科学基金资助项目（51309061）；中国博士后科学基金资助项目（2012M512133）；中央高校基本科研业务费专项基金资助项目（ HEUCF40117）． （）
