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Combustion noise: modeling and prediction

Tam, Christopher K.W. and Bake, Friedrich and Hultgren, Lennart G. and Poinsot, Thierry (2019) Combustion noise: modeling and prediction. CEAS Aeronautical Journal, 10 (1), pp. 101-122. Springer. DOI: 10.1007/s13272-019-00377-2 ISSN 1869-5590

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Official URL: https://link.springer.com/article/10.1007/s13272-019-00377-2

Abstract

This paper reviews both direct and indirect combustion noise. For convenience, they will simply be referred to as combustion noise and entropy noise. Combustion noise has been studied for well over half a century. However, because of the large number of parameters involved and the complexities inherent in the combustion processes, a widely accepted theory has yet to be developed. For this reason, this review focuses primarily for direct combustion noise on experimental measurements, semi-empirical relations and empirical but practical prediction methodologies. Important characteristic features and empirical correlations of combustion noise based on open flames and engine noise data are highlighted. Plausible generation of entropy noise by the passage of entropy waves through a nonuniform mean flow was first predicted theoretically circa 1970s. But it took forty years for its existence to be confirmed experimentally. Since then, there have been numerous publications on this subject. They are the primary materials of this review. The fundamental experiment and noise generation mechanism will be discussed first. Of great practical importance is whether there is significant generation of entropy waves inside an engine. This issue and new methods for modeling and predicting internally generated engine entropy noise are items that are examined at some length. Recent advances in computational methods especially in large eddy simulation lead us to envision an important role to be played by high-fidelity numerical simulation in future combustion and entropy noise research and prediction. A critical evaluation of a strategy for investigating and predicting the generation and propagation of these noise components from the combustor of an engine to its exhaust is included in this review.

Item URL in elib:https://elib.dlr.de/127188/
Document Type:Article
Title:Combustion noise: modeling and prediction
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Tam, Christopher K.W.tam (at) math.fsu.eduUNSPECIFIED
Bake, FriedrichFriedrich.Bake (at) dlr.dehttps://orcid.org/0000-0002-3235-428X
Hultgren, Lennart G.hultgren (at) nasa.govUNSPECIFIED
Poinsot, ThierryCERFACSUNSPECIFIED
Date:16 March 2019
Journal or Publication Title:CEAS Aeronautical Journal
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
Volume:10
DOI :10.1007/s13272-019-00377-2
Page Range:pp. 101-122
Publisher:Springer
Series Name:Special Issue on Aircraft Noise Generation and Assessment
ISSN:1869-5590
Status:Published
Keywords:Aeroacoustics, Propulsion noise, Combustion noise, Modeling, Prediction
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:propulsion systems
DLR - Research area:Aeronautics
DLR - Program:L ER - Engine Research
DLR - Research theme (Project):L - Turbine Technologies, L - Fan and Compressor Technologies, L - Combustion Chamber Technologies
Location: Berlin-Charlottenburg
Institutes and Institutions:Institute of Propulsion Technology > Engine Acoustic
Deposited By: Bake, Dr.-Ing. Friedrich
Deposited On:29 Apr 2019 12:11
Last Modified:05 Aug 2019 08:06

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