• Home
  • About CICEE
  • Editorial Board
  • Publication Ethics
  • 中文

    • Combustion Kinetic Modeling and Experimental Study of Polyoxymethylene Dimethyl Ethers-2 （PODE2）
    DOI：10.13949/j.cnki.nrjgc.2024.01.012
    Key Words:polyoxymethylene dimethyl ethers（PODE）  chemical reaction kinetics  rapid compression machine  combustion kinetic model
    Author NameAffiliationPostcode
    LI Ning School of Energy and Power Engineering， Xi’an Jiaotong University， Xi’an 710049， China 710049
    ZHAO Yuwei Air and Missile Defense College， Air Force Engineering University， Xi’an 710051， China 710051
    WEI Yanju School of Energy and Power Engineering， Xi’an Jiaotong University， Xi’an 710049， China 710049
    KONG Xiangdong School of Energy and Power Engineering， Xi’an Jiaotong University， Xi’an 710049， China 710049
    YU Tao School of Energy and Power Engineering， Xi’an Jiaotong University， Xi’an 710049， China 710049
    WU Yingtao School of Energy and Power Engineering， Xi’an Jiaotong University， Xi’an 710049， China 710049
    TANG Chenglong School of Energy and Power Engineering， Xi’an Jiaotong University， Xi’an 710049， China 710049
    LIU Shenghua School of Energy and Power Engineering， Xi’an Jiaotong University， Xi’an 710049， China 710049
    Hits: 1073
    Download times: 630
    Abstract:The combustion characteristics of polyoxymethylene dimethyl ethers-2 （PODE2） at medium and low temperatures were investigated by kinetic modeling and experimental study. Following the rection class-based rate rules， a detailed reaction mechanism for PODE2 was constructed according to the detailed mechanism of dimethoxymethane （DMM）. The PODE2 kinetic mechanism was validated against available literature experimental data. Ignition delay time of PODE2 was measured in a rapid compression machine （RCM） platform in the temperature range of 650~900 K and at the equivalence ratios of 0.5、1.0、2.0. The controlling factors of PODE2 auto-ignition process at medium and low temperatures were analyzed in conjunction with the constructed detailed mechanism. The results show that the constructed PODE2 reaction mechanism can well reproduce the experimentally measured ignition delay time. The PODE2 auto-ignition shows a clear two-stage ignition phenomenon and does not exhibit any negative temperature coefficient （NTC） behaviors. The first-stage ignition delay time of PODE2 varies linearly with temperature in the low temperature range， and shows a plateaus in the mid-temperature range of 720~820 K. The low temperature reactivity of PODE2 is derived from three alternative channels， and the typical low temperature chain branching reaction sequence initiated by the oxygen addition reaction is inhibited.
    View Full Text  View/Add Comment  Download reader