Show simple item record

dc.contributor.authorAhmed, Ahfaz
dc.contributor.authorHantouche, Mireille
dc.contributor.authorKhurshid, Muneeb
dc.contributor.authorMohamed, Samah
dc.contributor.authorNasir, Ehson Fawad
dc.contributor.authorFarooq, Aamir
dc.contributor.authorRoberts, William L.
dc.contributor.authorKnio, Omar
dc.contributor.authorSarathy, Mani
dc.date.accessioned2018-01-31T06:54:00Z
dc.date.available2018-01-31T06:54:00Z
dc.date.issued2018-01-30
dc.identifier.citationAhmed A, Hantouche M, Khurshid M, Mohamed SY, Nasir EF, et al. (2018) Impact of thermodynamic properties and heat loss on ignition of transportation fuels in rapid compression machines. Fuel 218: 203–212. Available: http://dx.doi.org/10.1016/j.fuel.2018.01.030.
dc.identifier.issn0016-2361
dc.identifier.doi10.1016/j.fuel.2018.01.030
dc.identifier.urihttp://hdl.handle.net/10754/626956
dc.description.abstractRapid compression machines (RCM) are extensively used to study autoignition of a wide variety of fuels at engine relevant conditions. Fuels ranging from pure species to full boiling range gasoline and diesel can be studied in an RCM to develop a better understanding of autoignition kinetics in low to intermediate temperature ranges. In an RCM, autoignition is achieved by compressing a fuel/oxidizer mixture to higher pressure and temperature, thereby initiating chemical reactions promoting ignition. During these experiments, the pressure is continuously monitored and is used to deduce significant events such as the end of compression and the onset of ignition. The pressure profile is also used to assess the temperature evolution of the gas mixture with time using the adiabatic core hypothesis and the heat capacity ratio of the gas mixture. In such RCM studies, real transportation fuels containing many components are often represented by simpler surrogate fuels. While simpler surrogates such as primary reference fuels (PRFs) and ternary primary reference fuel (TPRFs) can match research and motor octane number of transportation fuels, they may not accurately replicate thermodynamic properties (including heat capacity ratio). This non-conformity could exhibit significant discrepancies in the end of compression temperature, thereby affecting ignition delay (τign) measurements. Another aspect of RCMs that can affect τign measurement is post compression heat loss, which depends on various RCM parameters including geometry, extent of insulation, pre-heating temperature etc. To, better understand the effects of these non-chemical kinetic parameters on τign, thermodynamic properties of a number of FACE G gasoline surrogates were calculated and simulated in a multi-zone RCM model. The problem was further investigated using a variance based analysis and individual sensitivities were calculated. This study highlights the effects on τign due to thermodynamic properties of various surrogate fuels and differences in post compression heat loss over low, intermediate and high temperature region.
dc.description.sponsorshipResearch reported in this paper was funded by Saudi Aramco under the FUELCOM program and by King Abdullah University of Science and Technology (KAUST) with competitive research funding given to the Clean Combustion Research Center (CCRC). The authors also acknowledge the informative discussions with Dr. Tamour Javed of Fuel Technology Team at Research and Development Center Aramco, Dhahran, Kingdom of Saudi Arabia.
dc.publisherElsevier BV
dc.relation.urlhttp://www.sciencedirect.com/science/article/pii/S0016236118300395
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, 30 January 2018. DOI: 10.1016/j.fuel.2018.01.030. © 2018. 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.subjectIgnition delay
dc.subjectSurrogate formulation
dc.subjectRapid compression machine
dc.titleImpact of thermodynamic properties and heat loss on ignition of transportation fuels in rapid compression machines
dc.typeArticle
dc.contributor.departmentApplied Mathematics and Computational Science Program
dc.contributor.departmentChemical Engineering Program
dc.contributor.departmentChemical Kinetics & Laser Sensors Laboratory
dc.contributor.departmentClean Combustion Research Center
dc.contributor.departmentCombustion and Pyrolysis Chemistry (CPC) Group
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
dc.contributor.departmentMechanical Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmenthigh-pressure combustion (HPC) Research Group
dc.identifier.journalFuel
dc.eprint.versionPost-print
kaust.personAhmed, Ahfaz
kaust.personHantouche, Mireille
kaust.personKhurshid, Muneeb
kaust.personMohamed, Samah
kaust.personNasir, Ehson Fawad
kaust.personFarooq, Aamir
kaust.personRoberts, William L.
kaust.personKnio, Omar
kaust.personSarathy, Mani
dc.date.published-online2018-01-30
dc.date.published-print2018-04


Files in this item

Thumbnail
Name:
Ahfaz et al. FUEL 2018 (in press).pdf
Size:
1.490Mb
Format:
PDF
Description:
Accepted Manuscript

This item appears in the following Collection(s)

Show simple item record