Understanding premixed flame chemistry of gasoline fuels by comparing quantities of interest
Type
ArticleKAUST Department
Chemical Engineering ProgramClean Combustion Research Center
Combustion and Pyrolysis Chemistry (CPC) Group
Physical Science and Engineering (PSE) Division
Date
2016-07-23Online Publication Date
2016-07-23Print Publication Date
2017Permanent link to this record
http://hdl.handle.net/10754/621755
Metadata
Show full item recordAbstract
Gasoline fuels are complex mixtures that vary in composition depending on crude oil feedstocks and refining processes. Gasoline combustion in high-speed spark ignition engines is governed by flame propagation, so understanding fuel composition effects on premixed flame chemistry is important. In this study, the combustion chemistry of low-pressure, burner-stabilized, premixed flames of two gasoline fuels was investigated under stoichiometric conditions. Flame speciation was conducted using vacuum-ultraviolet synchrotron photoionization time-of-flight molecular beam mass spectroscopy. Stable end-products, intermediate hydrocarbons, and free radicals were detected and quantified. In addition, several isomeric species in the reaction pool were distinguished and quantified with the help of the highly tunable synchrotron radiation. A comparison between the products of both flames is presented and the major differences are highlighted. Premixed flame numerical simulations were conducted using surrogate fuel kinetic models for each flame. Furthermore, a new approach was developed to elucidate the main discrepancies between experimental measurements and the numerical predictions by comparing quantities of interest. © 2016.Citation
Selim H, Mohamed SY, Dawood AE, Sarathy SM (2016) Understanding premixed flame chemistry of gasoline fuels by comparing quantities of interest. Proceedings of the Combustion Institute. Available: http://dx.doi.org/10.1016/j.proci.2016.06.127.Sponsors
Saudi AramcoKing Abdullah University of Science and Technology
Director, Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy[DEAC02-05CH11231]
Publisher
Elsevier BVae974a485f413a2113503eed53cd6c53
10.1016/j.proci.2016.06.127