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A new method to predict high and low-temperature ignition delays under transient thermodynamic conditions and its experimental validation using a Rapid Compression-Expansion Machine

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A new method to predict high and low-temperature ignition delays under transient thermodynamic conditions and its experimental validation using a Rapid Compression-Expansion Machine

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dc.contributor.author Desantes Fernández, José Mª es_ES
dc.contributor.author Bermúdez, Vicente es_ES
dc.contributor.author López, J. Javier es_ES
dc.contributor.author López Pintor, Darío es_ES
dc.date.accessioned 2017-05-11T11:33:08Z
dc.date.available 2017-05-11T11:33:08Z
dc.date.issued 2016-09-01
dc.identifier.issn 0196-8904
dc.identifier.uri http://hdl.handle.net/10251/80987
dc.description.abstract A new procedure to predict both high-temperature stage and cool flames ignition delays under transient thermodynamic conditions has been developed in this paper. The results obtained have been compared with those obtained from the Livengood & Wu integral method, as well as with other predictive methods and with direct chemical kinetic simulations and experimental data. All simulations have been performed with CHEMKIN, employing a detailed chemical kinetic mechanism. The simulations and predictions have been validated in the working range versus experimental results obtained from a Rapid CompressionExpansion Machine (RCEM). The study has been carried out with n-heptane and iso-octane, as diesel and gasoline fuel surrogates, under a wide range of initial temperatures (from 358 K to 458 K), initial pressures (0.14 MPa and 0.17 MPa), compression ratios (15 and 17), EGR rates (from 0% to 50%) and equivalence ratios (from 0.3 to 0.8). The experimental results show good agreement with the direct chemical kinetic simulations and with the new predictive method proposed. In fact, the mean relative deviation between experiments and simulations is equal to 1.719% for n-heptane and equal to 1.504% for iso-octane. Besides, the new method has shown good predictive capability not only for the hightemperature stage of the process but also for cool flames, being the mean relative deviation versus the experimental data lower than 2.900%. Better predictions of the ignition delay have been obtained with the new procedure than the ones obtained with the classic Livengood & Wu expression, especially in those cases showing a two-stage ignition pattern. es_ES
dc.description.sponsorship The authors would like to thank different members of the CMT-Motores Termicos team of the Universitat Politecnica de Valencia for their contribution to this work. The authors would also like to thank the director of LAV-ETH, Konstantinos Boulouchos, for the Dario Lopez-Pintor's internship at LAV. Finally, the authors would like to thank the Spanish Ministry of Education for financing the PhD. Studies of Dario Lopez-Pintor (grant FPU13/02329). en_EN
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation Spanish Ministry of Education FPU13/02329 es_ES
dc.relation.ispartof Energy Conversion and Management es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject RCEM es_ES
dc.subject Ignition delay es_ES
dc.subject Autoignition modeling es_ES
dc.subject Fuels es_ES
dc.subject Chemical processes es_ES
dc.subject.classification MAQUINAS Y MOTORES TERMICOS es_ES
dc.title A new method to predict high and low-temperature ignition delays under transient thermodynamic conditions and its experimental validation using a Rapid Compression-Expansion Machine es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.enconman.2016.06.051
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería del Diseño - Escola Tècnica Superior d'Enginyeria del Disseny es_ES
dc.description.bibliographicCitation Desantes Fernández, JM.; Bermúdez, V.; López, JJ.; López Pintor, D. (2016). A new method to predict high and low-temperature ignition delays under transient thermodynamic conditions and its experimental validation using a Rapid Compression-Expansion Machine. Energy Conversion and Management. 123:512-522. doi:10.1016/j.enconman.2016.06.051 es_ES
dc.description.accrualMethod Senia es_ES
dc.relation.publisherversion http://dx.doi.org/10.1016/j.enconman.2016.06.051 es_ES
dc.description.upvformatpinicio 512 es_ES
dc.description.upvformatpfin 522 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 123 es_ES
dc.relation.senia 323457 es_ES


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