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    Counterflow ignition and extinction of FACE gasoline fuels

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    Manuscript_revised_wothout highlights.pdf
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    Description:
    Accepted manuscript
    Embargo End Date:
    2022-09-11
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    Embargo End Date:
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    Type
    Article
    Authors
    Alfazazi, Adamu cc
    Mairinger, Gerald
    Selim, Hatem
    Seshadri, Kalyanasundaram
    Sarathy, Mani cc
    KAUST Department
    Chemical Engineering Program
    Clean Combustion Research Center
    Combustion and Pyrolysis Chemistry (CPC) Group
    Physical Science and Engineering (PSE) Division
    Date
    2020-09-11
    Online Publication Date
    2020-09-11
    Print Publication Date
    2020-09
    Embargo End Date
    2022-09-11
    Submitted Date
    2019-11-05
    Permanent link to this record
    http://hdl.handle.net/10754/665084
    
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    Abstract
    The demand for petroleum-derived gasoline in the transportation sector is on the rise. For better knowledge of gasoline combustion in practical combustion systems, this study presents experimental measurements and numerical prediction of autoignition temperatures and extinction limits of six FACE (fuels for advanced combustion engines) gasoline fuels in counterflow flames. Extinction limits were measured at atmospheric pressures while the experiments for autoignition temperatures were carried out at atmospheric and high pressures. For atmospheric pressure experiment, the fuel stream consists of the pre-vaporized fuel diluted with nitrogen, while a condensed fuel configuration is used for ignition experiment at higher chamber pressures. The oxidizer stream is pure air. Autoignition temperatures of the tested fuels are nearly the same at atmospheric pressure, while a huge difference is observed as the pressure is increased. Unlike the ignition temperatures at atmospheric pressures, minor difference exists in the extinction limits of the tested fuels. Simulations were carried out using a recently developed gasoline surrogate model. Both multi-component and n-heptane/isooctane mixtures were used as surrogates for the simulations. Overall, the n-heptane/isooctane surrogate mixtures are consistently more reactive as compared the multi-component surrogate mixtures. Transport weighted enthalpy and radical index analysis was used to explain the differences in extinction strain rates for the various fuels.
    Citation
    Alfazazi, A., Mairinger, G., Selim, H., Seshadri, K., & Mani Sarathy, S. (2020). Counterflow ignition and extinction of FACE gasoline fuels. Proceedings of the Combustion Institute. doi:10.1016/j.proci.2020.06.364
    Sponsors
    This work was performed by the Clean Combustion Research Center with funding from King Abdullah University of Science and Technology (KAUST), University of California, San Diego and Saudi Aramco under the FUELCOM program. Research reported in this publication was also supported by competitive research funding from KAUST.
    Publisher
    Elsevier BV
    Journal
    Proceedings of the Combustion Institute
    DOI
    10.1016/j.proci.2020.06.364
    Additional Links
    https://linkinghub.elsevier.com/retrieve/pii/S1540748920304582
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.proci.2020.06.364
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Chemical Engineering Program; Clean Combustion Research Center

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