Prediction of propeller noise in steady flow based on combining LES and I-FEM

被引：0

作者：

College of Shipbuilding Engineering, Harbin Engineering University, Harbin ^{[1
]}

150001, China

不详 ^{[2
]}

430074, China

机构：

[1] College of Shipbuilding Engineering, Harbin Engineering University, Harbin

[2] The 2nd Wuhan Ship Development Design Institute, Wuhan

来源：

Harbin Gongcheng Daxue Xuebao | / 1卷 / 91-97期

关键词：

Hydrodynamic performance; I-FEM; LES; Noise performanc; Propeller; Propeller noise; Steady flow; Structural grid; Uniform flow;

D O I：

10.3969/j.issn.1006-7043.201309076

中图分类号：

学科分类号：

摘要：

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 domain 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 overall 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 dipole noise, among which monopole noise is the main part. This method can predict the hydrodynamic noise of propeller in uniform flow accurately, providing a feasible scheme for noise prediction in actual engineering application. ©, 2015, Editorial Board of Journal of HEU. All right reserved.

引用

页码：91 / 97

页数：6

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