Chen Ying, Wang Jingfu, Zhang Xiaolei, Li Conghao
MOE Key Laboratory of Enhanced Heat Transfer and Energy Conservation, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China.
Beijing Key Laboratory of Heat Transfer and Energy Conversion, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China.
Molecules. 2021 May 13;26(10):2905. doi: 10.3390/molecules26102905.
The effects (chemical, thermal, transport, and radiative) of CO added to the fuel side and oxidizer side on the flame temperature and the position of the flame front in a one-dimensional laminar counterflow diffusion flame of methane/N/O were studied. Overall CO resulted in a decrease in flame temperature whether on the fuel side or on the oxidizer side, with the negative effect being more obvious on the latter side. The prominent effects of CO on the flame temperature were derived from its thermal properties on the fuel side and its radiative properties on the oxidizer side. The results also highlighted the differences in the four effects of CO on the position of the flame front on different sides. In addition, an analysis of OH and H radicals and the heat release rate of the main reactions illustrated how CO affects the flame temperature.
研究了在甲烷/N/氧气的一维层流逆流扩散火焰中，添加到燃料侧和氧化剂侧的一氧化碳的影响（化学、热、传输和辐射）对火焰温度和火焰前沿位置的作用。总体而言，无论在燃料侧还是氧化剂侧，一氧化碳都会导致火焰温度降低，且在后者一侧负面影响更为明显。一氧化碳对火焰温度的显著影响源于其在燃料侧的热性质以及在氧化剂侧的辐射性质。结果还突出了一氧化碳在不同侧面对火焰前沿位置的四种影响的差异。此外，对OH和H自由基以及主要反应的热释放率的分析说明了一氧化碳是如何影响火焰温度的。
