Frequency-domain method for rotor self-noise prediction

被引：0

作者：

Zhou, Q. ^{[1
,2
,3
]}

Joseph, P.F. ^{[1
,2
]}

机构：

[1] University of Southampton, Highfield, Southampton, SO17 1BJ, United Kingdom

[2] Institute of Sound and Vibration Research

[3] Ship Science Department, 717 Jia Fang Road, Wuhan 430033, China

来源：

AIAA Journal | 2006年 / 44卷 / 06期

关键词：

A frequency-domain formulation is described for predicting the broadband self-noise radiation from an open rotor; or propeller; situated in a smooth; mean flow. It is assumed that the noise is predominantly due to the interaction between the hydrodynamic pressure associated with the turbulent boundary layer over the rotor blades and their trailing edges. Integration of the aerodynamic sources is performed over the actual blade surface rather than on the projected disk or nonthickness blade surface; as having being done in previous studies; thereby avoiding the commonly made assumption of flat plate geometry. The validation is performed of predictions of the measured broadband noise from an R212 propeller. Acceptable agreement between the measurement and predicted noise spectrum is obtained. The broadband self-noise directivity is also investigated; which is found to vary only slowly with azimuthal angle; with a main lobe in the direction of the propeller axis. The theory is used to undertake a parameter study of the broadband noise radiation from the propeller. Effects due to chord; blade number; and angle of attack are also discussed. Copyright © 2006 by the American Institute of Aeronautics and Astronautics; Inc. All rights reserved;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Journal article (JA)

引用

页码：1197 / 1206