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    • Study on the Micro-Scale Combustion Model and Influences of Parameters on Combustion Characteristics
    DOI：10.13949/j.cnki.nrjgc.2022.05.002
    Key Words:micro-scale combustion  heptane  chemical reaction mechanism  parameter influence law
    Author NameAffiliationE-mail
    HAN Kai* School of Mechanical Engineering， Beijing Institute of Technology， Beijing 100081， China
    Chongqing Innovation Center， Beijing Institute of Technology， Chongqing 401133， China     		autosim@bit.edu.cn 
    LIU Chaofan School of Mechanical Engineering， Beijing Institute of Technology， Beijing 100081， China  
    WEI Shilei School of Mechanical Engineering， Beijing Institute of Technology， Beijing 100081， China  
    LIANG Yongsen China North Engine Research Institute， Tianjin 300400， China  
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    Abstract:Based on the 3D computing platform CONVERGE， a micro-scale combustion model coupling the chemical reaction kinetics of diesel was proposed. And the effects of initial ambient pressures， initial ambient temperatures and slit spacing on the combustion process were studied. Results show that higher ambient pressure， smaller initial ambient temperature， and larger slit spacing leads to greater and earlier peak value of instantaneous heat release rate as well as higher maximum combustion temperature. Besides， the near steady state pressure before combustion determines the occurrence of micro-scale combustion. The micro-scale combustion happens when the near steady state pressure is higher than 0.69 MPa.
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