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Numerical modeling of plasma-assisted combustion effects on firing and intermediates in the combustion process of methanol-air mixtures

机译：等离子体辅助燃烧对甲醇-空气混合物燃烧过程中燃烧和中间产物影响的数值模型

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摘要

The effects of plasma-assisted ignition and combustion on the ignition-delay time (T_(id)) and intermediates in methanol combustion were simulated numerically through a chemical-kinetics mechanism of methanol oxidation. Plasma-assisted ignition can considerably shorten the T_(id) Plasma-assisted ignition is more conducive to a low temperature and the lean combustion of a methanol-air mixture. According to the shortest T_(id), the active particle order is: 0 < CH_3O < 220 Td < H < OH < CH_2OH < CH_3 < autoignition. The concentration of 0 atoms in active particles affects the T_(id) shortening. Plasma-assisted combustion can significantly shorten the time for the system temperature to reach a maximum. The concentrations of the reactants CH_3OH and O_2 decrease sharply for autoignition after the ignition-delay period, and the products CO, CO_2 and H_2O increase rapidly. In plasma-assisted combustion, the addition of active particles significantly increases the rate of chemical reaction of consumption of O_2, promotes the rapid redox reaction of methanol-air mixtures, oxidizes methanol fuel to CO_2 and H_2O more rapidly, and accelerates combustion. The sensitivity coefficients of temperature and T_(id) for plasma-assisted combustion are lower than those for autoignition.
机译：通过甲醇氧化的化学动力学机理，数值模拟了等离子体辅助点火和燃烧对点火延迟时间（T_（id））和甲醇燃烧中间体的影响。等离子体辅助点火可大大缩短T_（id）等离子体辅助点火更有利于低温和甲醇-空气混合物的稀薄燃烧。根据最短的T_（id），活性粒子的顺序为：0

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  • 来源
    《Energy》 |2020年第1期|116598.1-116598.13|共13页
  • 作者

    Changming Gong; Lin Yi; Kang Wang; Kuo Huang; Fenghua Liu;

  • 作者单位

    College of Mechanical and Electronic Engineering Dalian Minzu University Dalian 116600 China;

    State Key Laboratory of Automotive Simulation and Control Jilin University Changchun 130022 China BMW Brilliance Automotive Ltd Shenyang 110021 China;

    Fluids & Thermal Engineering Research Croup Faculty of Engineering University of Nottingham NC7 2RD UK;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Plasma-assisted combustion; Firing; Intermediates; Methanol-air mixtures;

    机译：等离子辅助燃烧;射击;中间体;甲醇-空气混合物;

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