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    • Numerical Investigation on the Flame Development and Ignition Characteristics of Ammonia Premixed Gas Ignited by Hydrogen Jet Flame in A Pre-Chamber
    DOI：10.13949/j.cnki.nrjgc.2023.05.004
    Key Words:ammonia  pre-chamber  jet ignition  jet characteristic
    Author NameAffiliationE-mail
    WANG Luoxi* Key Laboratory for Power Machinery and Engineering of M.O.E.， Shanghai Jiao Tong University， Shanghai 200240， China wangluoxi23187@sjtu.edu.cn 
    REN Fei Key Laboratory for Power Machinery and Engineering of M.O.E.， Shanghai Jiao Tong University， Shanghai 200240， China renfei@sjtu.edu.cn 
    LI Zhuohang Key Laboratory for Power Machinery and Engineering of M.O.E.， Shanghai Jiao Tong University， Shanghai 200240， China zhuohangli@sjtu.edu.cn 
    CHENG Xiaogang Key Laboratory for Power Machinery and Engineering of M.O.E.， Shanghai Jiao Tong University， Shanghai 200240， China chengxiaogang@sjtu.edu.cn 
    LI Jinze Key Laboratory for Power Machinery and Engineering of M.O.E.， Shanghai Jiao Tong University， Shanghai 200240， China jinze_li@sjtu.edu.cn 
    GAO Zhan Key Laboratory for Power Machinery and Engineering of M.O.E.， Shanghai Jiao Tong University， Shanghai 200240， China gaozhan@sjtu.edu.cn 
    ZHU Lei* Key Laboratory for Power Machinery and Engineering of M.O.E.， Shanghai Jiao Tong University， Shanghai 200240， China tonyzhulei@sjtu.edu.cn 
    HUANG Zhen Key Laboratory for Power Machinery and Engineering of M.O.E.， Shanghai Jiao Tong University， Shanghai 200240， China z-huang@sjtu.edu.cn 
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    Abstract:Based on the computational fluid platform CONVERGE， the development process of jet flame， jet characteristics and the distribution of species concentration were investigated in the process of ammonia ignition by hydrogen jet flame. The results show that the development process of jet flame can be divided into three stages， i.e.， cold jet stage， transition stage and hot jet stage. The growth rate of the flame front distance of the ignition jet flame gradually decreases due to the restriction of the NH3 flame propagation speed. With the progress of jet ignition， the temperature field and matter field of jet flame show obvious stratification. The high concentration area of NH2 is distributed in the NH3 combustion area of jet head and the H2 jet flame area of jet tail after NH2 separation.
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