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    Flame-controlling continuation method for extinction of counterflow sooting flames with detailed chemistry

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    Type
    Conference Paper
    Authors
    Quadarella, Erica cc
    Guo, Junjun cc
    Cuoci, Alberto
    Im, Hong G. cc
    KAUST Department
    Mechanical Engineering Program
    Physical Science and Engineering (PSE) Division
    Clean Combustion Research Center
    Date
    2022-01-03
    Submitted Date
    2021
    Permanent link to this record
    http://hdl.handle.net/10754/674896
    
    Metadata
    Show full item record
    Abstract
    The generation of S-curves for the extinction of counterflow sooting flames has been accomplished by implementing a flame-controlling continuation method inclusive of soot model. The code can generate solutions for augmented flamelets databases, including soot scalars, useful for Flamelet Progress Variable (FPV) tabulations for sooting turbulent simulations. Indeed, the inclusion of all S-curve's branches brings substantial improvements in the reproduction of extinction/re-ignition regimes or flame/acoustic interactions. In this context, developing a reliable tool for S-curve generation, with coupled reproduction of gas-phase and soot characteristics, is of great importance. The algorithm calculates the flamelet states through a 2-point flame-controlling continuation method with control on species mass fractions. Soot calculation is coupled with gas kinetics at every continuation so that flamelet states are inclusive of soot formation effects on precursors' consumption and flame temperature. The flame and soot features can be correctly predicted along the whole curve with smooth transitions between branches. A brief introduction on general S-curve properties is given, using the implementation on hydrogen flames with different oxidizer's inlet temperatures. Besides, soot characteristics are thoroughly investigated on ethylene flames at different pressures.
    Citation
    Quadarella, E., Guo, J., Cuoci, A., & Im, H. G. (2022). Flame-controlling continuation method for extinction of counterflow sooting flames with detailed chemistry. AIAA SCITECH 2022 Forum. doi:10.2514/6.2022-2252
    Sponsors
    The work was sponsored by the King Abdullah University of Science and Technology (KAUST).
    Publisher
    American Institute of Aeronautics and Astronautics
    Conference/Event name
    AIAA SCITECH 2022 Forum
    DOI
    10.2514/6.2022-2252
    Additional Links
    https://arc.aiaa.org/doi/10.2514/6.2022-2252
    ae974a485f413a2113503eed53cd6c53
    10.2514/6.2022-2252
    Scopus Count
    Collections
    Conference Papers; Physical Science and Engineering (PSE) Division; Mechanical Engineering Program; Clean Combustion Research Center

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