A Numerical Exploration of Engine Combustion Using Toluene Reference Fuel and Hydrogen Mixtures

Hydrogen-fueled internal combustion engines (H2ICEs) are capable of operating over a wide range of equivalence ratios: from ultra-lean mode to stoichiometric conditions. However, they provide maximum thermal efficiency and minimum NOx emissions if operated lean. Although NOx is produced, H2ICEs gene...

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Autores principales:	Barbato Alessio, Pessina Valentina, Borghi Massimo
Formato:	article
Lenguaje:	EN FR
Publicado:	EDP Sciences 2021
Materias:	Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/d8af4228ad64467db16a9accccc1753f
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spelling	oai:doaj.org-article:d8af4228ad64467db16a9accccc1753f2021-11-08T15:18:51ZA Numerical Exploration of Engine Combustion Using Toluene Reference Fuel and Hydrogen Mixtures2267-124210.1051/e3sconf/202131207003https://doaj.org/article/d8af4228ad64467db16a9accccc1753f2021-01-01T00:00:00Zhttps://www.e3s-conferences.org/articles/e3sconf/pdf/2021/88/e3sconf_ati2021_07003.pdfhttps://doaj.org/toc/2267-1242Hydrogen-fueled internal combustion engines (H2ICEs) are capable of operating over a wide range of equivalence ratios: from ultra-lean mode to stoichiometric conditions. However, they provide maximum thermal efficiency and minimum NOx emissions if operated lean. Although NOx is produced, H2ICEs generate little or no CO, CO2, SO2, HC, or PM emissions. The main limitation to pure hydrogen fueling is power density. To overcome such an issue, mixtures of gasoline and hydrogen can be exploited, with small modifications to the engine feeding system. Due to the peculiar characteristics of hydrogen (in terms of thermophysical properties, molecular weight and propagating flame characteristics) care must be adopted when trying to address combustion using computational fluid dynamics (CFD) tools. In this work, we simulate the combustion of mixtures of toluene reference fuel (TRF) and hydrogen under largely different ratios. To simplify the problem, liquid and gaseous injections are neglected, and a premixed mixture at the inlet of the CFD domain is imposed. Due to the different laminar flame speeds of the mixture components, mass-fraction weighted in-house correlations based on chemical kinetics simulations are adopted. Outcomes are compared with those obtained using standard correlations and mixing rules available in most commercial CFD packages.Barbato AlessioPessina ValentinaBorghi MassimoEDP SciencesarticleEnvironmental sciencesGE1-350ENFRE3S Web of Conferences, Vol 312, p 07003 (2021)
institution	DOAJ
collection	DOAJ
language	EN FR
topic	Environmental sciences GE1-350
spellingShingle	Environmental sciences GE1-350 Barbato Alessio Pessina Valentina Borghi Massimo A Numerical Exploration of Engine Combustion Using Toluene Reference Fuel and Hydrogen Mixtures
description	Hydrogen-fueled internal combustion engines (H2ICEs) are capable of operating over a wide range of equivalence ratios: from ultra-lean mode to stoichiometric conditions. However, they provide maximum thermal efficiency and minimum NOx emissions if operated lean. Although NOx is produced, H2ICEs generate little or no CO, CO2, SO2, HC, or PM emissions. The main limitation to pure hydrogen fueling is power density. To overcome such an issue, mixtures of gasoline and hydrogen can be exploited, with small modifications to the engine feeding system. Due to the peculiar characteristics of hydrogen (in terms of thermophysical properties, molecular weight and propagating flame characteristics) care must be adopted when trying to address combustion using computational fluid dynamics (CFD) tools. In this work, we simulate the combustion of mixtures of toluene reference fuel (TRF) and hydrogen under largely different ratios. To simplify the problem, liquid and gaseous injections are neglected, and a premixed mixture at the inlet of the CFD domain is imposed. Due to the different laminar flame speeds of the mixture components, mass-fraction weighted in-house correlations based on chemical kinetics simulations are adopted. Outcomes are compared with those obtained using standard correlations and mixing rules available in most commercial CFD packages.
format	article
author	Barbato Alessio Pessina Valentina Borghi Massimo
author_facet	Barbato Alessio Pessina Valentina Borghi Massimo
author_sort	Barbato Alessio
title	A Numerical Exploration of Engine Combustion Using Toluene Reference Fuel and Hydrogen Mixtures
title_short	A Numerical Exploration of Engine Combustion Using Toluene Reference Fuel and Hydrogen Mixtures
title_full	A Numerical Exploration of Engine Combustion Using Toluene Reference Fuel and Hydrogen Mixtures
title_fullStr	A Numerical Exploration of Engine Combustion Using Toluene Reference Fuel and Hydrogen Mixtures
title_full_unstemmed	A Numerical Exploration of Engine Combustion Using Toluene Reference Fuel and Hydrogen Mixtures
title_sort	numerical exploration of engine combustion using toluene reference fuel and hydrogen mixtures
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/d8af4228ad64467db16a9accccc1753f
work_keys_str_mv	AT barbatoalessio anumericalexplorationofenginecombustionusingtoluenereferencefuelandhydrogenmixtures AT pessinavalentina anumericalexplorationofenginecombustionusingtoluenereferencefuelandhydrogenmixtures AT borghimassimo anumericalexplorationofenginecombustionusingtoluenereferencefuelandhydrogenmixtures AT barbatoalessio numericalexplorationofenginecombustionusingtoluenereferencefuelandhydrogenmixtures AT pessinavalentina numericalexplorationofenginecombustionusingtoluenereferencefuelandhydrogenmixtures AT borghimassimo numericalexplorationofenginecombustionusingtoluenereferencefuelandhydrogenmixtures
_version_	1718441996972982272

A Numerical Exploration of Engine Combustion Using Toluene Reference Fuel and Hydrogen Mixtures

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