Acoustic investigation on nozzles with different types of six lobed chevrons

This paper deals with a few aspects of the notion of chevron and the process that helps reducing the noise pollution. Based on the gas dynamic and geometrical parameters of a single flow jet engine a model of CFD data processing is made. In this process the influence of chevrons on acoustic wave int...

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Bibliographic Details
Published in:INCAS Bulletin
Main Authors: Grigore CICAN, Daniel-Eugeniu CRUNTEANU
Format: Article
Language:English
Published: National Institute for Aerospace Research “Elie Carafoli” - INCAS 2013-12-01
Subjects:
numerical simulation
CFD
Gambit
noise control
chevron
acoustic
six
intensity leve
l
Online Access:http://bulletin.incas.ro/files/cican_g__crunteanu_d__vol_5_iss_4_2013.pdf
Description
Summary:This paper deals with a few aspects of the notion of chevron and the process that helps reducing the noise pollution. Based on the gas dynamic and geometrical parameters of a single flow jet engine a model of CFD data processing is made. In this process the influence of chevrons on acoustic wave intensity produced by the jet can be observed. A series of tests on six lobed triangular chevrons are discussed in order to settle the influence of the geometrical parameters on the flow and on the jet acoustics. Finally the paper presents the contribution of chevrons in noise pollution reduction.
ISSN:2066-8201
2247-4528

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