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    A lumped kinetic model for high-temperature pyrolysis and combustion of 50 surrogate fuel components and their mixtures

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    A lumped kinetic.pdf
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    Type
    Article
    Authors
    Zhang, Xiaoyuan cc
    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
    2020-10-15
    Online Publication Date
    2020-10-15
    Print Publication Date
    2021-02
    Embargo End Date
    2022-10-15
    Submitted Date
    2020-08-05
    Permanent link to this record
    http://hdl.handle.net/10754/665693
    
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    Abstract
    Wide distillation fuels (WDF) and gasoline/diesel blends have been proposed as new fuel formulations for advanced combustion engines. Recent studies have shown that multi-component gasoline and diesel surrogate mixtures can accurately mimic the distillation curve, functional group or hydrocarbon class distribution, average molecular weight, and other combustion properties of real fuels. This work presents an updated decoupling methodology to construct a 50-component fuel model, which consists of a skeletal sub-mechanism for large hydrocarbon components present in gasoline, jet and diesel fuels, a reduced C5-Cn mechanism, and a detailed C0-C4 mechanism. The entire model contains 156 species and 1132 reactions. The chemical classes covered include n-alkanes, iso-alkanes, cyclo-alkanes and alkylbenzenes. Compared with the comprehensive detailed kinetic modeling approach, the present methodology largely reduces the model size due to the use of skeletal fuel mechanisms. Compared with the traditional decoupling methodology, our approach increases the model accuracy since it contains a detailed C0-C4 mechanism instead of a reduced C2-C3 mechanism. The present model was validated against experimental targets at high temperatures, including the pyrolysis and oxidation speciation data and global parameters such as ignition delay times and laminar flame speeds from 30 pure fuel components and 12 fuel mixtures. In general, the present model performs well against these experimental data, suggesting this methodology is a suitable approach for developing accurate kinetic models for multi-component fuels. Future work will extend the present framework to predict low-temperature combustion chemistry of multi-component fuels.
    Citation
    Zhang, X., & Mani Sarathy, S. (2021). A lumped kinetic model for high-temperature pyrolysis and combustion of 50 surrogate fuel components and their mixtures. Fuel, 286, 119361. doi:10.1016/j.fuel.2020.119361
    Sponsors
    This work was supported by King Abdullah University of Science and Technology (KAUST) with funds allocated to the Clean Combustion Research Center. We gratefully acknowledge contributions from the KAUST Clean Fuels Consortium (KCFC), and its member companies.
    Publisher
    Elsevier BV
    Journal
    Fuel
    DOI
    10.1016/j.fuel.2020.119361
    Additional Links
    https://linkinghub.elsevier.com/retrieve/pii/S0016236120323577
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.fuel.2020.119361
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Chemical Engineering Program; Clean Combustion Research Center

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