A comprehensive investigation of acoustic power level in a moderate or intense low oxygen dilution in a jet-in-hot-coflow under various working conditions

Mousavi, S. M., Kamali, R., Sotoudeh, F., Pourabidi, R., Karimi, N. and Jeung, I.-S. (2019) A comprehensive investigation of acoustic power level in a moderate or intense low oxygen dilution in a jet-in-hot-coflow under various working conditions. Aerospace Science and Technology, 93, 105339. (doi:10.1016/j.ast.2019.105339)

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Abstract

Reducing the level of noise emission is an important requirement in modern propulsion and power generation. This requires gaining a deeper understanding of the underlying physics and identifying the key parameters dominating noise generation in modern combustion technologies. Thus, this paper investigates the effect of several working parameters on moderate or intense low oxygen dilution (MILD) combustion noise. A finite volume solver, GRI-Mech 2.11 with 247 reactions and 49 species, k-ε RNG turbulence model as well as the EDC model are used to develop a computational model of the reactive flow, while the volume fraction and time scale constants are set to 3 and 1, respectively. After validating the numerical method by comparison with the experimental data, MILD combustion is simulated under various conditions to study the noise emission. The results show that modifying the inlet conditions such as changes in species mass fractions, inlet temperature, and inlet Reynolds number alter the acoustic power level through variations in heat release.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Karimi, Dr Nader
Authors: Mousavi, S. M., Kamali, R., Sotoudeh, F., Pourabidi, R., Karimi, N., and Jeung, I.-S.
College/School:College of Science and Engineering > School of Engineering > Systems Power and Energy
Journal Name:Aerospace Science and Technology
Publisher:Elsevier
ISSN:1270-9638
ISSN (Online):1626-3219
Published Online:14 August 2019
Copyright Holders:Copyright © 2019 Elsevier Masson SAS
First Published:First published in Aerospace Science and Technology 93:105339
Publisher Policy:Reproduced in accordance with the publisher copyright policy

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