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Experimental investigation of laminar flame speeds of propane in O_2/CO_2 atmosphere and kinetic simulation

机译：O_2 / CO_2大气中丙烷层流火焰速度的实验研究及动力学模拟

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摘要

In this paper, the laminar flame speeds of C3H8 in O-2/CO2 atmosphere were investigated experimentally and numerically. The laminar flame speeds of C3H8/O-2/CO2 were measured using a Bunsen flame under the condition of different equivalent ratios and O-2 concentrations at ordinary pressure and temperature. It was found that the laminar flame speed gradually increased with the increase of O-2 concentration. The equivalent ratio of the highest laminar flame speed is between 1.0 and 1.1 under each fixed oxygen concentration. The high concentration CO2 reduces the laminar flame propagation velocity of C3H8, which is due to thermal, radiative and chemical properties of CO2. The calculations were performed to investigate the effects of CO2 on the laminar flame speed. Results show that the thermal effect of CO2 is the determining factor, the chemical effect is the second factor and radiative effect is the last one. Reaction H + O-2 = O + OH is the most important chain reaction for the oxidation of C3H8. In addition to this, the third body effect in reaction H + O-2+ M = HO2 + M changed the laminar flame speed significantly in the condition of very low equivalent ratio and O-2 concentration.
机译：在本文中，实验和数值研究了O-2 / CO2气氛中C3H8的层状火焰速度。在常规压力和温度下在不同当量比和O-2浓度的条件下使用Bunsen火焰测量C3H8 / O-2 / CO 2的层状火焰速度。发现层状火焰速度随着O-2浓度的增加而逐渐增加。在每个固定氧浓度下，最高层压火焰速度的等效比在1.0和1.1之间。高浓度CO 2降低了C3H8的层状火焰传播速度，这是由于CO 2的热，辐射和化学性质为原的。进行计算以研究CO2对层流火焰速度的影响。结果表明，CO2的热效应是确定因素，化学效果是第二因素，辐射效果是最后一个。反应H + O-2 = O + OH是最重要的C3H8氧化链反应。除此之外，在反应H + O-2 + M = HO2 + M中的第三个体效果在非常低的等效比和O-2浓度的条件下显着改变了层状火焰速度。

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  • 来源
    《Fuel》 |2020年第may15期|117347.1-117347.7|共7页
  • 作者

    Hu Xianzhong; Wei Hao;

  • 作者单位

    Northeastern Univ Sch Met Shenyang 110819 Liaoning Peoples R China;

    Northeastern Univ Sch Met Shenyang 110819 Liaoning Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Laminar flame speed; Propane; Oxy-fuels; Combustion;

    机译：层状火焰速度;丙烷;氧燃料;燃烧;

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