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    A Regime Diagram for Autoignition of Homogeneous Reactant Mixtures with Turbulent Velocity and Temperature Fluctuations

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    0010220220151034355.pdf
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    Type
    Article
    Authors
    Im, Hong G. cc
    Pal, Pinaki cc
    Wooldridge, Margaret S.
    Mansfield, Andrew B.
    KAUST Department
    Clean Combustion Research Center
    Computational Reacting Flow Laboratory (CRFL)
    Mechanical Engineering Program
    Physical Science and Engineering (PSE) Division
    Date
    2015-04-02
    Online Publication Date
    2015-04-02
    Print Publication Date
    2015-08-03
    Permanent link to this record
    http://hdl.handle.net/10754/350277
    
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    Abstract
    A theoretical scaling analysis is conducted to propose a diagram to predict weak and strong ignition regimes for a compositionally homogeneous reactant mixture with turbulent velocity and temperature fluctuations. The diagram provides guidance on expected ignition behavior based on the thermo-chemical properties of the mixture and the flow/scalar field conditions. The analysis is an extension of the original Zeldovich’s analysis by combining the turbulent flow and scalar characteristics in terms of the characteristic Damköhler and Reynolds numbers of the system, thereby providing unified and comprehensive understanding of the physical and chemical mechanisms controlling ignition characteristics. Estimated parameters for existing experimental measurements in a rapid compression facility show that the regime diagram predicts the observed ignition characteristics with good fidelity.
    Citation
    A Regime Diagram for Autoignition of Homogeneous Reactant Mixtures with Turbulent Velocity and Temperature Fluctuations 2015:150402072307000 Combustion Science and Technology
    Publisher
    Informa UK Limited
    Journal
    Combustion Science and Technology
    DOI
    10.1080/00102202.2015.1034355
    Additional Links
    http://www.tandfonline.com/doi/full/10.1080/00102202.2015.1034355
    ae974a485f413a2113503eed53cd6c53
    10.1080/00102202.2015.1034355
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Mechanical Engineering Program; Clean Combustion Research Center

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