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A predictive Livengood–Wu correlation for two-stage ignition

Author(s): Pan, Jiaying; Zhao, Peng; Law, Chung K; Wei, Haiqiao

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dc.contributor.authorPan, Jiaying-
dc.contributor.authorZhao, Peng-
dc.contributor.authorLaw, Chung K-
dc.contributor.authorWei, Haiqiao-
dc.date.accessioned2021-10-08T20:20:17Z-
dc.date.available2021-10-08T20:20:17Z-
dc.date.issued2016en_US
dc.identifier.citationPan, Jiaying, Peng Zhao, Chung K. Law, and Haiqiao Wei. "A predictive Livengood–Wu correlation for two-stage ignition." International Journal of Engine Research 17, no. 8 (2016): 825-835. doi:10.1177/1468087415619516en_US
dc.identifier.issn1468-0874-
dc.identifier.urihttps://www.researchgate.net/profile/Peng-Zhao-89/publication/283328572_A_Predictive_Livengood-Wu_Correlation_for_Two-stage_Ignition/links/5633d0bc08ae758841121bd8/A-Predictive-Livengood-Wu-Correlation-for-Two-stage-Ignition.pdf-
dc.identifier.urihttp://arks.princeton.edu/ark:/88435/pr1nw1j-
dc.description.abstractThe Livengood–Wu correlation has been widely used to predict the state of auto-ignition in internal combustion engines, although its application to two-stage ignition processes remains unresolved. In this study, the original Livengood–Wu integral is extended to such two-stage ignition process and applied to simulations of typical operations within homogeneous charge compression ignition engines. Specifically, based on recent understanding of the global and detailed kinetics of low-temperature chemistry leading to ignition, simplified Arrhenius-based global reaction expressions were developed for both stages of constant-state auto-ignition. It is shown that the original Livengood–Wu integral works well for the first-stage ignition delay, as demonstrated in previous studies. Furthermore, by also accurately describing the cool flame temperature and pressure increment at the end of the first-stage ignition, the second-stage ignition delay can in addition be coupled with the first-stage ignition and predicted satisfactorily with a second integral. This formulation is then applied to extensive homogeneous charge compression ignition engine operation conditions, showing satisfactory predictive capability.en_US
dc.format.extent825 - 835en_US
dc.language.isoen_USen_US
dc.relation.ispartofInternational Journal of Engine Researchen_US
dc.rightsAuthor's manuscripten_US
dc.titleA predictive Livengood–Wu correlation for two-stage ignitionen_US
dc.typeJournal Articleen_US
dc.identifier.doi10.1177/1468087415619516-
dc.identifier.eissn2041-3149-
pu.type.symplectichttp://www.symplectic.co.uk/publications/atom-terms/1.0/journal-articleen_US

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