Ignition delay time correlation of fuel blends based on Livengood-Wu description

Handle URI:
http://hdl.handle.net/10754/625741
Title:
Ignition delay time correlation of fuel blends based on Livengood-Wu description
Authors:
Khaled, Fathi; Badra, Jihad; Farooq, Aamir ( 0000-0001-5296-2197 )
Abstract:
In this work, a universal methodology for ignition delay time (IDT) correlation of multicomponent fuel mixtures is reported. The method is applicable over wide ranges of temperatures, pressures, and equivalence ratios. n-Heptane, iso-octane, toluene, ethanol and their blends are investigated in this study because of their relevance to gasoline surrogate formulation. The proposed methodology combines benefits from the Livengood-Wu integral, the cool flame characteristics and the Arrhenius behavior of the high-temperature ignition delay time to suggest a simple and comprehensive formulation for correlating the ignition delay times of pure components and blends. The IDTs of fuel blends usually have complex dependences on temperature, pressure, equivalence ratio and composition of the blend. The Livengood-Wu integral is applied here to relate the NTC region and the cool flame phenomenon. The integral is further extended to obtain a relation between the IDTs of fuel blends and pure components. Ignition delay times calculated using the proposed methodology are in excellent agreement with those simulated using a detailed chemical kinetic model for n-heptane, iso-octane, toluene, ethanol and blends of these components. Finally, very good agreement is also observed for combustion phasing in homogeneous charge compression ignition (HCCI) predictions between simulations performed with detailed chemistry and calculations using the developed ignition delay correlation.
KAUST Department:
Clean Combustion Research Center
Citation:
Khaled F, Badra J, Farooq A (2017) Ignition delay time correlation of fuel blends based on Livengood-Wu description. Fuel 209: 776–786. Available: http://dx.doi.org/10.1016/j.fuel.2017.07.095.
Publisher:
Elsevier BV
Journal:
Fuel
Issue Date:
17-Aug-2017
DOI:
10.1016/j.fuel.2017.07.095
Type:
Article
ISSN:
0016-2361
Sponsors:
Work reported in this publication was funded by Saudi Aramco under the FUELCOM program and by King Abdullah University of Science and Technology (KAUST).
Additional Links:
http://www.sciencedirect.com/science/article/pii/S0016236117309572
Appears in Collections:
Articles; Clean Combustion Research Center

Full metadata record

DC FieldValue Language
dc.contributor.authorKhaled, Fathien
dc.contributor.authorBadra, Jihaden
dc.contributor.authorFarooq, Aamiren
dc.date.accessioned2017-10-03T12:49:37Z-
dc.date.available2017-10-03T12:49:37Z-
dc.date.issued2017-08-17en
dc.identifier.citationKhaled F, Badra J, Farooq A (2017) Ignition delay time correlation of fuel blends based on Livengood-Wu description. Fuel 209: 776–786. Available: http://dx.doi.org/10.1016/j.fuel.2017.07.095.en
dc.identifier.issn0016-2361en
dc.identifier.doi10.1016/j.fuel.2017.07.095en
dc.identifier.urihttp://hdl.handle.net/10754/625741-
dc.description.abstractIn this work, a universal methodology for ignition delay time (IDT) correlation of multicomponent fuel mixtures is reported. The method is applicable over wide ranges of temperatures, pressures, and equivalence ratios. n-Heptane, iso-octane, toluene, ethanol and their blends are investigated in this study because of their relevance to gasoline surrogate formulation. The proposed methodology combines benefits from the Livengood-Wu integral, the cool flame characteristics and the Arrhenius behavior of the high-temperature ignition delay time to suggest a simple and comprehensive formulation for correlating the ignition delay times of pure components and blends. The IDTs of fuel blends usually have complex dependences on temperature, pressure, equivalence ratio and composition of the blend. The Livengood-Wu integral is applied here to relate the NTC region and the cool flame phenomenon. The integral is further extended to obtain a relation between the IDTs of fuel blends and pure components. Ignition delay times calculated using the proposed methodology are in excellent agreement with those simulated using a detailed chemical kinetic model for n-heptane, iso-octane, toluene, ethanol and blends of these components. Finally, very good agreement is also observed for combustion phasing in homogeneous charge compression ignition (HCCI) predictions between simulations performed with detailed chemistry and calculations using the developed ignition delay correlation.en
dc.description.sponsorshipWork reported in this publication was funded by Saudi Aramco under the FUELCOM program and by King Abdullah University of Science and Technology (KAUST).en
dc.publisherElsevier BVen
dc.relation.urlhttp://www.sciencedirect.com/science/article/pii/S0016236117309572en
dc.subjectIgnition delay timesen
dc.subjectAutoignitionen
dc.subjectCombustionen
dc.titleIgnition delay time correlation of fuel blends based on Livengood-Wu descriptionen
dc.typeArticleen
dc.contributor.departmentClean Combustion Research Centeren
dc.identifier.journalFuelen
dc.contributor.institutionFuel Technology Division, R&D Center, Saudi Aramco, Dhahran, Saudi Arabiaen
kaust.authorKhaled, Fathien
kaust.authorFarooq, Aamiren
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