The prediction of fan exhaust noise propagation

Yuan Zhao, Philip J. Morris

Research output: Chapter in Book/Report/Conference proceedingConference contribution

9 Scopus citations

Abstract

This paper describes a methodology for the prediction of the radiation and propagation of tonal and broadband fan exhaust noise. The current studies focus on a frequency domain approach. The end goal of the research described In this paper is the solution of the linearized Euler equations (LEE) for realistic mean flows and engine geometries. In order to deal efficiently with complex engine geometries the methods are developed for unstructured grids. The Streamline Upwind Petrov Galerkin (SUPG) finite element method is used to prevent numerical instabilities when solving the LEE. To validate different elements of the methodology, several test cases have been performed and compared with benchmark analytical solutions. The propagation of fan exhaust noise is calculated for a simplified fan geometry with an absorbing liner condition. The effect of source frequency and spinning mode number are also examined.

Original languageEnglish (US)
Title of host publicationCollection of Technical Papers - 11th AIAA/CEAS Aeroacoustics Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
Pages208-223
Number of pages16
ISBN (Print)1563477300, 9781563477300
DOIs
StatePublished - 2005
EventCollection of Technical Papers - 11th AIAA/CEAS Aeroacoustics Conference - Monterey, CA, United States
Duration: Mar 23 2005Mar 25 2005

Publication series

NameCollection of Technical Papers - 11th AIAA/CEAS Aeroacoustics Conference
Volume1

Other

OtherCollection of Technical Papers - 11th AIAA/CEAS Aeroacoustics Conference
CountryUnited States
CityMonterey, CA
Period3/23/053/25/05

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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