OH-Planar Laser-Induced Fluorescence Measurements in Laminar Diffusion Flames of n-Heptane with Coflow Air Diluted by N(2) and CO(2)

[Image: see text] The distribution of hydroxyl (OH) radicals in the laminar diffusion flame of n-heptane was studied by planar laser-induced fluorescence (PLIF). The influences of nitrogen (N(2)) and carbon dioxide (CO(2)) dilution on the formation and distribution of OH radicals were analyzed. The...

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Autores principales: Huang, Yizhou, Du, Hui, Wang, Wenyu, Shi, Dongkai, Wu, Yimeng, Li, Bowen, Zhou, Lei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2021
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8482471/
https://www.ncbi.nlm.nih.gov/pubmed/34604633
http://dx.doi.org/10.1021/acsomega.1c02949
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author Huang, Yizhou
Du, Hui
Wang, Wenyu
Shi, Dongkai
Wu, Yimeng
Li, Bowen
Zhou, Lei
author_facet Huang, Yizhou
Du, Hui
Wang, Wenyu
Shi, Dongkai
Wu, Yimeng
Li, Bowen
Zhou, Lei
author_sort Huang, Yizhou
collection PubMed
description [Image: see text] The distribution of hydroxyl (OH) radicals in the laminar diffusion flame of n-heptane was studied by planar laser-induced fluorescence (PLIF). The influences of nitrogen (N(2)) and carbon dioxide (CO(2)) dilution on the formation and distribution of OH radicals were analyzed. The corresponding dilution ratios (volume fractions) of both N(2) and CO(2) vary from 0 to 5%. The results show that for the n-heptane flame, the OH radical is mainly concentrated in the two wings of the flame, presenting a radially approximate symmetrical distribution. Both N(2) and CO(2) dilutions decrease the intensity of the maximum OH radical fluorescence and the total OH radical fluorescence. Moreover, the flame temperature decreases more significantly with the CO(2) dilution ratio due to the combination of the dilution effect and thermal effect.
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spelling pubmed-84824712021-10-01 OH-Planar Laser-Induced Fluorescence Measurements in Laminar Diffusion Flames of n-Heptane with Coflow Air Diluted by N(2) and CO(2) Huang, Yizhou Du, Hui Wang, Wenyu Shi, Dongkai Wu, Yimeng Li, Bowen Zhou, Lei ACS Omega [Image: see text] The distribution of hydroxyl (OH) radicals in the laminar diffusion flame of n-heptane was studied by planar laser-induced fluorescence (PLIF). The influences of nitrogen (N(2)) and carbon dioxide (CO(2)) dilution on the formation and distribution of OH radicals were analyzed. The corresponding dilution ratios (volume fractions) of both N(2) and CO(2) vary from 0 to 5%. The results show that for the n-heptane flame, the OH radical is mainly concentrated in the two wings of the flame, presenting a radially approximate symmetrical distribution. Both N(2) and CO(2) dilutions decrease the intensity of the maximum OH radical fluorescence and the total OH radical fluorescence. Moreover, the flame temperature decreases more significantly with the CO(2) dilution ratio due to the combination of the dilution effect and thermal effect. American Chemical Society 2021-09-13 /pmc/articles/PMC8482471/ /pubmed/34604633 http://dx.doi.org/10.1021/acsomega.1c02949 Text en © 2021 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Huang, Yizhou
Du, Hui
Wang, Wenyu
Shi, Dongkai
Wu, Yimeng
Li, Bowen
Zhou, Lei
OH-Planar Laser-Induced Fluorescence Measurements in Laminar Diffusion Flames of n-Heptane with Coflow Air Diluted by N(2) and CO(2)
title OH-Planar Laser-Induced Fluorescence Measurements in Laminar Diffusion Flames of n-Heptane with Coflow Air Diluted by N(2) and CO(2)
title_full OH-Planar Laser-Induced Fluorescence Measurements in Laminar Diffusion Flames of n-Heptane with Coflow Air Diluted by N(2) and CO(2)
title_fullStr OH-Planar Laser-Induced Fluorescence Measurements in Laminar Diffusion Flames of n-Heptane with Coflow Air Diluted by N(2) and CO(2)
title_full_unstemmed OH-Planar Laser-Induced Fluorescence Measurements in Laminar Diffusion Flames of n-Heptane with Coflow Air Diluted by N(2) and CO(2)
title_short OH-Planar Laser-Induced Fluorescence Measurements in Laminar Diffusion Flames of n-Heptane with Coflow Air Diluted by N(2) and CO(2)
title_sort oh-planar laser-induced fluorescence measurements in laminar diffusion flames of n-heptane with coflow air diluted by n(2) and co(2)
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8482471/
https://www.ncbi.nlm.nih.gov/pubmed/34604633
http://dx.doi.org/10.1021/acsomega.1c02949
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