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Experimental validation and analysis of seven different chemical kinetic mechanisms for n-dodecane using a Rapid Compression-Expansion Machine

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Experimental validation and analysis of seven different chemical kinetic mechanisms for n-dodecane using a Rapid Compression-Expansion Machine

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dc.contributor.author Desantes, J.M. es_ES
dc.contributor.author López, J. Javier es_ES
dc.contributor.author García-Oliver, José M es_ES
dc.contributor.author López-Pintor, Darío es_ES
dc.date.accessioned 2020-07-30T03:35:25Z
dc.date.available 2020-07-30T03:35:25Z
dc.date.issued 2017-08 es_ES
dc.identifier.issn 0010-2180 es_ES
dc.identifier.uri http://hdl.handle.net/10251/148902
dc.description.abstract [EN] Seven different chemical kinetic mechanisms for n-dodecane, two detailed and five reduced, have been evaluated under Engine Combustion Network (ECN) thermodynamic conditions by comparison to experimental measurements in a Rapid Compression-Expansion Machine (RCEM). The target ECN conditions are imposed at Top Dead Center (TDC), which cover a wide range of temperatures (from 850 K to 1000 K), oxygen molar fractions (0.21 and 0.15) and equivalence ratios (0.8, 0.9 and 1), while the pressure is fixed to keep a constant density at TDC equal to 22.8 kg/m(3). The results obtained have been used to validate the chemical kinetic simulations, which have been performed with CHEMKIN, by comparing both cool flames and high temperature ignition delays, as well as the heat released in each stage of the combustion process in case of having a two-stage ignition pattern. The experimental results show good agreement with the chemical kinetic simulations. In fact, the mean relative deviation in ignition delay between experiments and simulations among all the chemical mechanisms is equal to 18.0% (3 CAD) for both cool flames and high temperature ignition. In general, closer correspondence has been obtained for the ignition delay referred to the high-temperature stage of the process, being the cool flames phenomenon more difficult to reproduce. Moreover, the differences between the reduced mechanisms and the most detailed one have been analyzed, concluding that the enhanced specific reaction rates of the most reduced mechanisms cause differences not only on the ignition delays, but also on the Negative Temperature Coefficient (NTC) behavior and on the heat released during cool flames. (C) 2017 The Combustion Institute. Published by Elsevier Inc. All rights reserved. es_ES
dc.description.sponsorship The authors would also like to thank the Spanish Ministry of Education for financing the PhD. Studies of Dario Lopez-Pintor (grant FPU13/02329). This study was partially funded by the Spanish Ministry of Economy and Competitiveness in the frame of the COMEFF (TRA2014-59483-R) project. es_ES
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation MINECO/TRA2014-59483-R es_ES
dc.relation MECD/FPU13/02329 es_ES
dc.relation.ispartof Combustion and Flame es_ES
dc.rights Reconocimiento - No comercial - Sin obra derivada (by-nc-nd) es_ES
dc.subject RCEM es_ES
dc.subject Ignition delay es_ES
dc.subject Autoignition modeling es_ES
dc.subject ECN es_ES
dc.subject N-dodecane es_ES
dc.subject.classification MAQUINAS Y MOTORES TERMICOS es_ES
dc.title Experimental validation and analysis of seven different chemical kinetic mechanisms for n-dodecane using a Rapid Compression-Expansion Machine es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.combustflame.2017.04.004 es_ES
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Máquinas y Motores Térmicos - Departament de Màquines i Motors Tèrmics es_ES
dc.description.bibliographicCitation Desantes, J.; López, JJ.; García-Oliver, JM.; López-Pintor, D. (2017). Experimental validation and analysis of seven different chemical kinetic mechanisms for n-dodecane using a Rapid Compression-Expansion Machine. Combustion and Flame. 182:76-89. https://doi.org/10.1016/j.combustflame.2017.04.004 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://doi.org/10.1016/j.combustflame.2017.04.004 es_ES
dc.description.upvformatpinicio 76 es_ES
dc.description.upvformatpfin 89 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 182 es_ES
dc.relation.pasarela S\336858 es_ES
dc.contributor.funder Ministerio de Educación es_ES
dc.contributor.funder Ministerio de Economía y Competitividad es_ES


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