Laminar burning velocities at elevated pressures for gasoline and gasoline surrogates associated with RON

Handle URI:
http://hdl.handle.net/10754/566126
Title:
Laminar burning velocities at elevated pressures for gasoline and gasoline surrogates associated with RON
Authors:
Mannaa, Ossama; Mansour, Morkous S. ( 0000-0002-5002-1403 ) ; Roberts, William L. ( 0000-0003-1999-2831 ) ; Chung, Suk-Ho ( 0000-0001-8782-312X )
Abstract:
The development and validation of a new gasoline surrogate using laminar flame speed as a target parameter is presented. Laminar burning velocities were measured using a constant-volume spherical vessel with ignition at the center of the vessel. Tested fuels included iso-octane, n-heptane, toluene, various mixtures of primary reference fuels (PRFs) and toluene reference fuels (TRFs) and three gasoline fuels of 70, 85 and 95 RON (FACE J, C and F) at the initial temperature of 358K and pressures up to 0.6MPa in the equivalence ratio ranging from 0.8 to 1.6. Normalized laminar burning velocity data were mapped into a tri-component mixture space at different experimental conditions to allocate different gasoline surrogates for different gasoline fuels, having RON of 70, 85 and 95. The surrogates of TRF-70-4 (17.94% iso-C8H18 +42.06% n-C7H16 +40% C7H8), TRF-85-1 (77.4% iso-C8H18 +17.6% n-C7H16 +5% C7H8), and TRF-95-1 (88.47% iso-C8H18 +6.53% n-C7H16 +5% C7H8) of RON 70, 85 and 95, respectively, are shown to successfully emulate the burning rate characteristics of the gasoline fuels associated with these RONs under the various experimental conditions investigated. An empirical correlation was derived to obtain laminar burning velocities at pressures that are experimentally unattainable as high as 3.0MPa. Laminar burning velocities were comparable to the simulated values for lean and stoichiometric flames but they were relatively higher than the simulated values for rich flames. A flame instability assessment was conducted by determining Markstein length, critical Pecklet number, and critical Karlovitz number at the onset of flame instability.
KAUST Department:
Clean Combustion Research Center
Publisher:
Elsevier BV
Journal:
Combustion and Flame
Issue Date:
Jun-2015
DOI:
10.1016/j.combustflame.2015.01.004
Type:
Article
ISSN:
00102180
Appears in Collections:
Articles; Clean Combustion Research Center

Full metadata record

DC FieldValue Language
dc.contributor.authorMannaa, Ossamaen
dc.contributor.authorMansour, Morkous S.en
dc.contributor.authorRoberts, William L.en
dc.contributor.authorChung, Suk-Hoen
dc.date.accessioned2015-08-12T09:29:19Zen
dc.date.available2015-08-12T09:29:19Zen
dc.date.issued2015-06en
dc.identifier.issn00102180en
dc.identifier.doi10.1016/j.combustflame.2015.01.004en
dc.identifier.urihttp://hdl.handle.net/10754/566126en
dc.description.abstractThe development and validation of a new gasoline surrogate using laminar flame speed as a target parameter is presented. Laminar burning velocities were measured using a constant-volume spherical vessel with ignition at the center of the vessel. Tested fuels included iso-octane, n-heptane, toluene, various mixtures of primary reference fuels (PRFs) and toluene reference fuels (TRFs) and three gasoline fuels of 70, 85 and 95 RON (FACE J, C and F) at the initial temperature of 358K and pressures up to 0.6MPa in the equivalence ratio ranging from 0.8 to 1.6. Normalized laminar burning velocity data were mapped into a tri-component mixture space at different experimental conditions to allocate different gasoline surrogates for different gasoline fuels, having RON of 70, 85 and 95. The surrogates of TRF-70-4 (17.94% iso-C8H18 +42.06% n-C7H16 +40% C7H8), TRF-85-1 (77.4% iso-C8H18 +17.6% n-C7H16 +5% C7H8), and TRF-95-1 (88.47% iso-C8H18 +6.53% n-C7H16 +5% C7H8) of RON 70, 85 and 95, respectively, are shown to successfully emulate the burning rate characteristics of the gasoline fuels associated with these RONs under the various experimental conditions investigated. An empirical correlation was derived to obtain laminar burning velocities at pressures that are experimentally unattainable as high as 3.0MPa. Laminar burning velocities were comparable to the simulated values for lean and stoichiometric flames but they were relatively higher than the simulated values for rich flames. A flame instability assessment was conducted by determining Markstein length, critical Pecklet number, and critical Karlovitz number at the onset of flame instability.en
dc.publisherElsevier BVen
dc.subjectGasoline surrogatesen
dc.subjectLaminar burning velocityen
dc.subjectRONen
dc.subjectSpherical flame instabilityen
dc.subjectTRFen
dc.titleLaminar burning velocities at elevated pressures for gasoline and gasoline surrogates associated with RONen
dc.typeArticleen
dc.contributor.departmentClean Combustion Research Centeren
dc.identifier.journalCombustion and Flameen
kaust.authorMannaa, Ossamaen
kaust.authorMansour, Morkous S.en
kaust.authorRoberts, William L.en
kaust.authorChung, Suk-Hoen
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