A new methodology to calculate process rates in a kinetic Monte Carlo model of PAH growth

This paper develops a new methodology to calculate the process rates in a kinetic Monte Carlo (KMC) model of polycyclic aromatic hydrocarbon (PAH) growth. The methodology uses a combination of the steady-state and partial-equilibrium approximations. It shows good agreement with the results from simu...

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Main Authors: Leon, Gustavo, Eaves, Nick, Akroyd, Jethro, Mosbach, Sebastian, Kraft, Markus
Other Authors: School of Chemical and Biomedical Engineering
Format: Article
Language:English
Published: 2021
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Online Access:https://hdl.handle.net/10356/152232
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1522322023-12-29T06:53:07Z A new methodology to calculate process rates in a kinetic Monte Carlo model of PAH growth Leon, Gustavo Eaves, Nick Akroyd, Jethro Mosbach, Sebastian Kraft, Markus School of Chemical and Biomedical Engineering Cambridge Centre for Advanced Research and Education in Singapore (CARES) Engineering::Chemical engineering Modelling Polycyclic Aromatic Hydrocarbon This paper develops a new methodology to calculate the process rates in a kinetic Monte Carlo (KMC) model of polycyclic aromatic hydrocarbon (PAH) growth. The methodology uses a combination of the steady-state and partial-equilibrium approximations. It shows good agreement with the results from simulations using a detailed chemical mechanism under conditions relevant to flames (temperatures between 1000 and 2500 K, equivalence ratios between 0.5 and 10). The new methodology is used to calculate the rate of different stochastic processes in KMC simulations of PAH growth of premixed ethylene-oxygen flames. The resulting rates are only a function of temperature and the main gas-phase species present in the flame environment. The results of the KMC model are shown to be consistent with the concentrations of species calculated using a well-established mechanism for the growth of small PAH species. National Research Foundation (NRF) Accepted version This work was partly funded by the National Research Foundation (NRF), Prime Minister’s Office, Singapore under its Campus for Research Excellence and Technological Enterprise (CREATE) programme. This project has received funding from the European Union’s Horizon 2020 research and innovation programme under Grant Agreement no. 724145. Gustavo Leon is funded by a CONACYT Cambridge Scholarship and wishes to acknowledge both institutions, the National Council of Science and Technology and the Cambridge Commonwealth Trust. Markus Kraft acknowledges the support of the Alexander von Humboldt foundation 2021-07-23T06:26:26Z 2021-07-23T06:26:26Z 2019 Journal Article Leon, G., Eaves, N., Akroyd, J., Mosbach, S. & Kraft, M. (2019). A new methodology to calculate process rates in a kinetic Monte Carlo model of PAH growth. Combustion and Flame, 209, 133-143. https://dx.doi.org/10.1016/j.combustflame.2019.07.032 0010-2180 https://hdl.handle.net/10356/152232 10.1016/j.combustflame.2019.07.032 2-s2.0-85069958887 209 133 143 en Combustion and Flame © 2019 The Combustion Institute. All rights reserved. This paper was published by Elsevier in Combustion and Flame and is made available with permission of The Combustion Institute. application/pdf application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Chemical engineering
Modelling
Polycyclic Aromatic Hydrocarbon
spellingShingle Engineering::Chemical engineering
Modelling
Polycyclic Aromatic Hydrocarbon
Leon, Gustavo
Eaves, Nick
Akroyd, Jethro
Mosbach, Sebastian
Kraft, Markus
A new methodology to calculate process rates in a kinetic Monte Carlo model of PAH growth
description This paper develops a new methodology to calculate the process rates in a kinetic Monte Carlo (KMC) model of polycyclic aromatic hydrocarbon (PAH) growth. The methodology uses a combination of the steady-state and partial-equilibrium approximations. It shows good agreement with the results from simulations using a detailed chemical mechanism under conditions relevant to flames (temperatures between 1000 and 2500 K, equivalence ratios between 0.5 and 10). The new methodology is used to calculate the rate of different stochastic processes in KMC simulations of PAH growth of premixed ethylene-oxygen flames. The resulting rates are only a function of temperature and the main gas-phase species present in the flame environment. The results of the KMC model are shown to be consistent with the concentrations of species calculated using a well-established mechanism for the growth of small PAH species.
author2 School of Chemical and Biomedical Engineering
author_facet School of Chemical and Biomedical Engineering
Leon, Gustavo
Eaves, Nick
Akroyd, Jethro
Mosbach, Sebastian
Kraft, Markus
format Article
author Leon, Gustavo
Eaves, Nick
Akroyd, Jethro
Mosbach, Sebastian
Kraft, Markus
author_sort Leon, Gustavo
title A new methodology to calculate process rates in a kinetic Monte Carlo model of PAH growth
title_short A new methodology to calculate process rates in a kinetic Monte Carlo model of PAH growth
title_full A new methodology to calculate process rates in a kinetic Monte Carlo model of PAH growth
title_fullStr A new methodology to calculate process rates in a kinetic Monte Carlo model of PAH growth
title_full_unstemmed A new methodology to calculate process rates in a kinetic Monte Carlo model of PAH growth
title_sort new methodology to calculate process rates in a kinetic monte carlo model of pah growth
publishDate 2021
url https://hdl.handle.net/10356/152232
_version_ 1787136780411076608