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Semi-empirical methods for coaxial jet noise prediction

Semi-empirical methods for coaxial jet noise prediction
Semi-empirical methods for coaxial jet noise prediction
This work is describes and compare the implementation and exploitation of the
most common semi-empirical methods for dual-stream (coaxial) jet noise prediction.
Six different methods available in the literature were numerically implemented and
validated against experimental results. In addition, a detailed discussion is presented in
order to show the advantages and disadvantages of each empirical model employed, as
well as its limitations.
Special attention is given to the so-called Four-Source model, developed in the
Institute of Sound and Vibration (ISVR). This method was carefully examined since it
relies on physical assumptions to describe the noise sources inside the coaxial jet flow.
Although, it is still an empirical method, its results are found to be more consistent and
reliable than the others methods considered.
326
University of Southampton
de Almeida, Odenir
f8fa4103-3894-4c9c-9b3f-989ebc7145e1
de Almeida, Odenir
f8fa4103-3894-4c9c-9b3f-989ebc7145e1

de Almeida, Odenir (2008) Semi-empirical methods for coaxial jet noise prediction (ISVR Technical Report, 326) Southampton, UK. University of Southampton

Record type: Monograph (Project Report)

Abstract

This work is describes and compare the implementation and exploitation of the
most common semi-empirical methods for dual-stream (coaxial) jet noise prediction.
Six different methods available in the literature were numerically implemented and
validated against experimental results. In addition, a detailed discussion is presented in
order to show the advantages and disadvantages of each empirical model employed, as
well as its limitations.
Special attention is given to the so-called Four-Source model, developed in the
Institute of Sound and Vibration (ISVR). This method was carefully examined since it
relies on physical assumptions to describe the noise sources inside the coaxial jet flow.
Although, it is still an empirical method, its results are found to be more consistent and
reliable than the others methods considered.

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Published date: September 2008

Identifiers

Local EPrints ID: 65353
URI: https://eprints.soton.ac.uk/id/eprint/65353
PURE UUID: c634a1c1-ed80-428b-8575-0ce1a3bd58f3

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Date deposited: 06 Mar 2009
Last modified: 13 Mar 2019 20:19

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