Computational aero-acoustics for fan duct propagation and radiation. Current status and application to turbofan liner optimisation

被引：41

作者：

Astley, R. J. ^{[1
]}

Sugimoto, R. ^{[1
]}

Mustafi, P. ^{[1
]}

机构：

[1] Univ Southampton, Inst Sound & Vibrat Res, Southampton SO17 1BJ, Hants, England

来源：

JOURNAL OF SOUND AND VIBRATION | 2011年 / 330卷 / 16期

基金：

英国工程与自然科学研究理事会;

关键词：

NONREFLECTING BOUNDARY-CONDITIONS; WAVE-ENVELOPE ELEMENTS; ACOUSTIC RADIATION; FINITE-ELEMENT; SOURCE TERMS; IMPLEMENTATION; FORMULATION; EQUATIONS; NOISE; WALL;

D O I：

10.1016/j.jsv.2011.03.022

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Novel techniques are presented to reduce noise from turbofan aircraft engines by optimising the acoustic treatment in engine ducts. The application of Computational Aero-Acoustics (CAA) to predict acoustic propagation and absorption in turbofan ducts is reviewed and a critical assessment of performance indicates that validated and accurate techniques are now available for realistic engine predictions. A procedure for integrating CAA methods with state of the art optimisation techniques is proposed in the remainder of the article. This is achieved by embedding advanced computational methods for noise prediction within automated and semi-automated optimisation schemes. Two different strategies are described and applied to realistic nacelle geometries and fan sources to demonstrate the feasibility of this approach for industry scale problems. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：3832 / 3845

页数：14