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Numerical Investigations on Methane–Air Nanosecond Pulsed Dielectric Barrier Discharge Plasma-Assisted Combustion

[Image: see text] Plasma-assisted combustion is a promising approach to achieve fast ignition and highly efficient combustion. In this work, methane–air nanosecond pulsed dielectric barrier discharge plasma-assisted combustion is numerically investigated by combining a homemade plasma model with the...

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Autores principales: Pan, Jie, Meng, Wenjing, Li, Shi, Du, Jun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2020
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7745419/
https://www.ncbi.nlm.nih.gov/pubmed/33344843
http://dx.doi.org/10.1021/acsomega.0c04735
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author Pan, Jie
Meng, Wenjing
Li, Shi
Du, Jun
author_facet Pan, Jie
Meng, Wenjing
Li, Shi
Du, Jun
author_sort Pan, Jie
collection PubMed
description [Image: see text] Plasma-assisted combustion is a promising approach to achieve fast ignition and highly efficient combustion. In this work, methane–air nanosecond pulsed dielectric barrier discharge plasma-assisted combustion is numerically investigated by combining a homemade plasma model with the combustion model of software CHEMKIN-PRO. Effects of varying applied voltage amplitudes on the characteristic parameters of the plasma-assisted planar shear flow combustion as well as the reaction pathway maps of not only the nanosecond pulsed dielectric barrier discharge plasma but also the combustions without and with plasma assistance are systematically illustrated and analyzed. The simulation results indicate that under the combined action of increasing electric field intensity and increasing charged particle densities, the peak value of the discharge current density increases, and the peak time of the discharge current density is brought forward with the increase of the applied voltage amplitude. The temperature reaches its peak value earlier in the methane–air combustion with plasma assistance than without plasma assistance. The maximum temperature reduces to around 1900 K when the applied voltage amplitude is higher than 11 kV. There are emerging pathways to generate hydrocarbons C(2)H(4) and C(2)H(2) in the plasma-assisted combustion, the reactions of CH(4) on CH and C(2)H on H(2), respectively. The reactions involving active species such as H play a significant role in the plasma-assisted combustion, which causes an obvious decrease in the densities of these active species with plasma assistance.
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spelling pubmed-77454192020-12-18 Numerical Investigations on Methane–Air Nanosecond Pulsed Dielectric Barrier Discharge Plasma-Assisted Combustion Pan, Jie Meng, Wenjing Li, Shi Du, Jun ACS Omega [Image: see text] Plasma-assisted combustion is a promising approach to achieve fast ignition and highly efficient combustion. In this work, methane–air nanosecond pulsed dielectric barrier discharge plasma-assisted combustion is numerically investigated by combining a homemade plasma model with the combustion model of software CHEMKIN-PRO. Effects of varying applied voltage amplitudes on the characteristic parameters of the plasma-assisted planar shear flow combustion as well as the reaction pathway maps of not only the nanosecond pulsed dielectric barrier discharge plasma but also the combustions without and with plasma assistance are systematically illustrated and analyzed. The simulation results indicate that under the combined action of increasing electric field intensity and increasing charged particle densities, the peak value of the discharge current density increases, and the peak time of the discharge current density is brought forward with the increase of the applied voltage amplitude. The temperature reaches its peak value earlier in the methane–air combustion with plasma assistance than without plasma assistance. The maximum temperature reduces to around 1900 K when the applied voltage amplitude is higher than 11 kV. There are emerging pathways to generate hydrocarbons C(2)H(4) and C(2)H(2) in the plasma-assisted combustion, the reactions of CH(4) on CH and C(2)H on H(2), respectively. The reactions involving active species such as H play a significant role in the plasma-assisted combustion, which causes an obvious decrease in the densities of these active species with plasma assistance. American Chemical Society 2020-12-03 /pmc/articles/PMC7745419/ /pubmed/33344843 http://dx.doi.org/10.1021/acsomega.0c04735 Text en © 2020 American Chemical Society This is an open access article published under a Creative Commons Non-Commercial No Derivative Works (CC-BY-NC-ND) Attribution License (http://pubs.acs.org/page/policy/authorchoice_ccbyncnd_termsofuse.html) , which permits copying and redistribution of the article, and creation of adaptations, all for non-commercial purposes.
spellingShingle Pan, Jie
Meng, Wenjing
Li, Shi
Du, Jun
Numerical Investigations on Methane–Air Nanosecond Pulsed Dielectric Barrier Discharge Plasma-Assisted Combustion
title Numerical Investigations on Methane–Air Nanosecond Pulsed Dielectric Barrier Discharge Plasma-Assisted Combustion
title_full Numerical Investigations on Methane–Air Nanosecond Pulsed Dielectric Barrier Discharge Plasma-Assisted Combustion
title_fullStr Numerical Investigations on Methane–Air Nanosecond Pulsed Dielectric Barrier Discharge Plasma-Assisted Combustion
title_full_unstemmed Numerical Investigations on Methane–Air Nanosecond Pulsed Dielectric Barrier Discharge Plasma-Assisted Combustion
title_short Numerical Investigations on Methane–Air Nanosecond Pulsed Dielectric Barrier Discharge Plasma-Assisted Combustion
title_sort numerical investigations on methane–air nanosecond pulsed dielectric barrier discharge plasma-assisted combustion
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7745419/
https://www.ncbi.nlm.nih.gov/pubmed/33344843
http://dx.doi.org/10.1021/acsomega.0c04735
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