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    Numerical studies of spray combustion processes of palm oil biodiesel and diesel fuels using reduced chemical kinetic mechanisms

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    Type
    Conference Paper
    Authors
    Kuti, Olawole
    Sarathy, Mani cc
    Nishida, Keiya
    Roberts, William L. cc
    KAUST Department
    Chemical Engineering Program
    Clean Combustion Research Center
    Combustion and Pyrolysis Chemistry (CPC) Group
    Mechanical Engineering Program
    Physical Science and Engineering (PSE) Division
    high-pressure combustion (HPC) Research Group
    Date
    2014-04-01
    Permanent link to this record
    http://hdl.handle.net/10754/564907
    
    Metadata
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    Abstract
    Spray combustion processes of palm oil biodiesel (PO) and conventional diesel fuels were simulated using the CONVERGE CFD code. Thermochemical and reaction kinetic data (115 species and 460 reactions) by Luo et al. (2012) and Lu et al. (2009) (68 species and 283 reactions) were implemented in the CONVERGE CFD to simulate the spray and combustion processes of the two fuels. Tetradecane (C14H30) and n- heptane (C7H 16) were used as surrogates for diesel. For the palm biodiesel, the mixture of methyl decanoate (C11H20O2), methyl-9-decenoate (C11H19O2) and n-heptane was used as surrogate. The palm biodiesel surrogates were combined in proportions based on the previous GC-MS results for the five major biodiesel components namely methyl palmitate, methyl stearate, methyl oleate, methyl linoleate and methyl linolenate. The Favre-Averaged Navier Stokes based simulation using the renormalization group (RNG) k-ε turbulent model was implemented in the numerical calculations of the spray formation processes while the SAGE chemical kinetic solver is used for the detailed kinetic modeling. The SAGE chemical kinetic solver is directly coupled with the gas phase calculations by renormalization group (RNG) k-ε turbulent model using a well-stirred reactor model. Validations of the spray liquid length, ignition delay and flame lift-off length data were performed against previous experimental results. The simulated liquid length, ignition delay and flame lift-off length were validated at an ambient density of 15kg/m3, and injection pressure conditions of 100, 200 and 300 MPa were utilized. The predicted liquid length, ignition delay and flame lift-off length agree with the trends obtained in the experimental data at all injection conditions. Copyright © 2014 SAE International.
    Citation
    Kuti, O. A., Sarathy, M., Nishida, K., & Roberts, W. (2014). Numerical Studies of Spray Combustion Processes of Palm Oil Biodiesel and Diesel Fuels using Reduced Chemical Kinetic Mechanisms. SAE Technical Paper Series. doi:10.4271/2014-01-1143
    Publisher
    SAE International
    Journal
    SAE Technical Paper Series
    Conference/Event name
    SAE 2014 World Congress and Exhibition
    DOI
    10.4271/2014-01-1143
    ae974a485f413a2113503eed53cd6c53
    10.4271/2014-01-1143
    Scopus Count
    Collections
    Conference Papers; Physical Science and Engineering (PSE) Division; Chemical Engineering Program; Mechanical Engineering Program; Clean Combustion Research Center

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