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Effect of free stream turbulence on NOx and soot formation in turbulent diffusion CH4-air flames

A two-dimensional axisymmetric RANS numerical model was solved to investigate the effect of increasing the turbulence intensity of the air stream on the NOx and soot formation in turbulent methane diffusion flames. The turbulence–combustion interaction in the flame field was modelled in a k - e/EDM...

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Main Authors: Saqr, Khalid M., Aly, Hossam S., Sies, Mohsin M., Abdul Wahid, Mazlan
Format: Article
Published: Elsevier Limited 2010
Subjects:
TJ Mechanical engineering and machinery
Online Access:http://eprints.utm.my/id/eprint/25120/
https://doi.org/10.1016/j.icheatmasstransfer.2010.02.008
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spelling my.utm.251202018-03-22T10:37:29Z http://eprints.utm.my/id/eprint/25120/ Effect of free stream turbulence on NOx and soot formation in turbulent diffusion CH4-air flames Saqr, Khalid M. Aly, Hossam S. Sies, Mohsin M. Abdul Wahid, Mazlan TJ Mechanical engineering and machinery A two-dimensional axisymmetric RANS numerical model was solved to investigate the effect of increasing the turbulence intensity of the air stream on the NOx and soot formation in turbulent methane diffusion flames. The turbulence–combustion interaction in the flame field was modelled in a k - e/EDM framework, while the NO and soot concentrations were predicted through implementing the extended Zildovich mechanism and two transport equations model, respectively. The predicted spatial temperature gradients showed acceptable agreement with published experimental measurements. It was found that the increase of free stream turbulence intensity of the air supply results in a significant reduction in the NO formation of the flame. Such phenomenon is discussed by depicting the spatial distribution of the NO concentration in the flame. An observable reduction of the soot formation was also found to be associated with the increase of inlet turbulence intensity of air stream. Elsevier Limited 2010-07 Article PeerReviewed Saqr, Khalid M. and Aly, Hossam S. and Sies, Mohsin M. and Abdul Wahid, Mazlan (2010) Effect of free stream turbulence on NOx and soot formation in turbulent diffusion CH4-air flames. International Communications in Heat and Mass Transfer, 37 (6). 611 - 617. ISSN 0735-1933 https://doi.org/10.1016/j.icheatmasstransfer.2010.02.008 DOI: 10.1016/j.icheatmasstransfer.2010.02.008
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
Saqr, Khalid M.
Aly, Hossam S.
Sies, Mohsin M.
Abdul Wahid, Mazlan
Effect of free stream turbulence on NOx and soot formation in turbulent diffusion CH4-air flames
description A two-dimensional axisymmetric RANS numerical model was solved to investigate the effect of increasing the turbulence intensity of the air stream on the NOx and soot formation in turbulent methane diffusion flames. The turbulence–combustion interaction in the flame field was modelled in a k - e/EDM framework, while the NO and soot concentrations were predicted through implementing the extended Zildovich mechanism and two transport equations model, respectively. The predicted spatial temperature gradients showed acceptable agreement with published experimental measurements. It was found that the increase of free stream turbulence intensity of the air supply results in a significant reduction in the NO formation of the flame. Such phenomenon is discussed by depicting the spatial distribution of the NO concentration in the flame. An observable reduction of the soot formation was also found to be associated with the increase of inlet turbulence intensity of air stream.
format Article
author Saqr, Khalid M.
Aly, Hossam S.
Sies, Mohsin M.
Abdul Wahid, Mazlan
author_facet Saqr, Khalid M.
Aly, Hossam S.
Sies, Mohsin M.
Abdul Wahid, Mazlan
author_sort Saqr, Khalid M.
title Effect of free stream turbulence on NOx and soot formation in turbulent diffusion CH4-air flames
title_short Effect of free stream turbulence on NOx and soot formation in turbulent diffusion CH4-air flames
title_full Effect of free stream turbulence on NOx and soot formation in turbulent diffusion CH4-air flames
title_fullStr Effect of free stream turbulence on NOx and soot formation in turbulent diffusion CH4-air flames
title_full_unstemmed Effect of free stream turbulence on NOx and soot formation in turbulent diffusion CH4-air flames
title_sort effect of free stream turbulence on nox and soot formation in turbulent diffusion ch4-air flames
publisher Elsevier Limited
publishDate 2010
url http://eprints.utm.my/id/eprint/25120/
https://doi.org/10.1016/j.icheatmasstransfer.2010.02.008
_version_ 1643647563500355584
score 13.211869

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