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dc.contributor.authorNaser, Nimal
dc.contributor.authorJaasim, Mohammed
dc.contributor.authorAtef, Nour
dc.contributor.authorChung, Suk Ho
dc.contributor.authorIm, Hong G.
dc.contributor.authorSarathy, Mani
dc.date.accessioned2017-10-03T12:49:31Z
dc.date.available2017-10-03T12:49:31Z
dc.date.issued2017-06-29
dc.identifier.citationNaser N, Jaasim M, Atef N, Chung SH, Im HG, et al. (2017) On the effects of fuel properties and injection timing in partially premixed compression ignition of low octane fuels. Fuel 207: 373–388. Available: http://dx.doi.org/10.1016/j.fuel.2017.06.048.
dc.identifier.issn0016-2361
dc.identifier.doi10.1016/j.fuel.2017.06.048
dc.identifier.urihttp://hdl.handle.net/10754/625652
dc.description.abstractA better understanding on the effects of fuel properties and injection timing is required to improve the performance of advanced engines based on low temperature combustion concepts. In this work, an experimental and computational study was conducted to investigate the effects of physical and chemical kinetic properties of low octane fuels and their surrogates in partially premixed compression ignition (PPCI) engines. The main objective was to identify the relative importance of physical versus chemical kinetic properties in predicting practical fuel combustion behavior across a range of injection timings. Two fuel/surrogate pairs were chosen for comparison: light naphtha (LN) versus the primary reference fuel (PRF) with research octane number of 65 (PRF 65), and FACE (fuels for advanced combustion engines) I gasoline versus PRF 70. Two sets of parametric studies were conducted: the first varied the amount of injected fuel mass at different injection timings to match a fixed combustion phasing, and the second maintained the same injected fuel mass at each injection timing to assess resulting combustion phasing changes. Full-cycle computational fluid dynamic engine simulations were conducted by accounting for differences in the physical properties of the original and surrogate fuels, while employing identical chemical kinetics. The simulations were found to capture trends observed in the experiments, while providing details on spatial mixing and chemical reactivity for different fuels and injection timings. It was found that differences in physical properties become increasingly important as injection timing was progressively delayed from premixed conditions, and this was rationalized by analysis of mixture stratification patterns resulting from injection of fuels with different physical properties. The results suggest that accurate descriptions of both physical and chemical behavior of fuels are critical in predictive simulations of PPCI engines for a wide range of injection timings.
dc.description.sponsorshipThis work was supported by Saudi Aramco under the FUELCOM program and the Clean Combustion Research Center (CCRC) at King Abdullah University of Science and Technology (KAUST). The authors are thankful to Yoann Viollet at the Saudi Aramco Fuel Technology Division for helpful comments in improving the manuscript. We are also grateful to Adrian Ichim at the Clean Combustion Research Center, KAUST for his help and support with the engine experiments.
dc.publisherElsevier BV
dc.relation.urlhttp://www.sciencedirect.com/science/article/pii/S0016236117307561
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Fuel. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Fuel, [, , (2017-06-29)] DOI: 10.1016/j.fuel.2017.06.048 . © 2017. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectLight naphtha
dc.subjectPartially premixed compression ignition
dc.subjectCombustion
dc.subjectFuel stratification
dc.subjectLow octane gasoline
dc.titleOn the effects of fuel properties and injection timing in partially premixed compression ignition of low octane fuels
dc.typeArticle
dc.contributor.departmentChemical Engineering Program
dc.contributor.departmentClean Combustion Research Center
dc.contributor.departmentCombustion and Laser Diagnostics Laboratory
dc.contributor.departmentCombustion and Pyrolysis Chemistry (CPC) Group
dc.contributor.departmentComputational Reacting Flow Laboratory (CRFL)
dc.contributor.departmentMechanical Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalFuel
dc.eprint.versionPost-print
kaust.personNaser, Nimal
kaust.personJaasim, Mohammed
kaust.personAtef, Nour
kaust.personChung, Suk Ho
kaust.personIm, Hong G.
kaust.personSarathy, Mani
refterms.dateFOA2019-06-29T00:00:00Z
dc.date.published-online2017-06-29
dc.date.published-print2017-11


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