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Numerical investigations on the methane-oxygen diffusion flame-street phenomena in a microchannel: Effects of wall temperatures, inflow rates and global equivalence ratios on flame behaviors and combustion performances

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  • Sun, Bowen
  • Kang, Xin
  • Wang, Yu

Abstract

“Flame-street” is an exotic diffusion flame behavior characterized by the peculiar formation of intermittent reaction-zones in the mixing layer of fuel and oxidizer streams in a micro-channel. In the present work, parametric studies were numerically performed to investigate the influences of operation conditions on flame behaviors as well as the overall performances of the micro-burner. The operation conditions investigated included wall temperatures (500–1400 K), methane/oxygen inflow rates (5/10–650/1300 sccm) and global equivalence ratios (0.5–2.0). The number of flame segments was observed to show a non-monotonic variation trend (first increasing from one to three and then decreasing from three to one) as the wall temperature or total inflow rate increased; while it was noticed to be insensitive to the variation of global equivalence ratios. The combustion efficiency and the ratio of heat loss to heat release were found to increase and decrease, respectively, with the increase of the wall temperature, except during the process when reductions of flame numbers occured. Above the very low-inflow rate regime, both the combustion efficiency and heat loss-to-release ratio increased as the inflow rate increased, unless a reduction of flame numbers took place (which can result in significant drops in both parameters). As the global equivalence ratio increased, the combustion efficiency decreased monotonically while the heat loss-to-release ratio stayed at a relatively constant level.

Suggested Citation

  • Sun, Bowen & Kang, Xin & Wang, Yu, 2020. "Numerical investigations on the methane-oxygen diffusion flame-street phenomena in a microchannel: Effects of wall temperatures, inflow rates and global equivalence ratios on flame behaviors and combu," Energy, Elsevier, vol. 207(C).
    • Handle: RePEc:eee:energy:v:207:y:2020:i:c:s0360544220313013
    DOI: 10.1016/j.energy.2020.118194
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    References listed on IDEAS

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    1. Cai, Tao & Tang, Aikun & Zhao, Dan & Zhou, Chen & Huang, Qiuhan, 2020. "Flame dynamics and stability of premixed methane/air in micro-planar quartz combustors," Energy, Elsevier, vol. 193(C).
    2. Yan, Yunfei & Liu, Ying & Li, Lixian & Cui, Yu & Zhang, Li & Yang, Zhongqing & Zhang, Zhien, 2019. "Numerical comparison of H2/air catalytic combustion characteristic of micro–combustors with a conventional, slotted or controllable slotted bluff body," Energy, Elsevier, vol. 189(C).
    3. Wan, Jianlong & Xu, Zuwei & Zhao, Haibo, 2018. "Methane/air premixed flame topology structure in a mesoscale combustor with a plate flame holder and preheating channels," Energy, Elsevier, vol. 165(PB), pages 802-811.
    4. Wang, Wei & Zuo, Zhengxing & Liu, Jinxiang, 2019. "Experimental study and numerical analysis of the scaling effect on the flame stabilization of propane/air mixture in the micro-scale porous combustor," Energy, Elsevier, vol. 174(C), pages 509-518.
    5. Yan, Yunfei & Wu, Gange & Huang, Weipeng & Zhang, Li & Li, Lixian & Yang, Zhongqing, 2019. "Numerical comparison study of methane catalytic combustion characteristic between newly proposed opposed counter-flow micro-combustor and the conventional ones," Energy, Elsevier, vol. 170(C), pages 403-410.
    6. Wan, Jianlong & Zhao, Haibo, 2018. "Thermal performance of solid walls in a mesoscale combustor with a plate flame holder and preheating channels," Energy, Elsevier, vol. 157(C), pages 448-459.
    7. Pan, Jianfeng & Zhang, Chenxin & Pan, Zhenhua & Wu, Di & Zhu, Yuejin & Lu, Qingbo & Zhang, Yi, 2020. "Investigation on the effect of bluff body ball on the combustion characteristics for methane/oxygen in micro combustor," Energy, Elsevier, vol. 190(C).
    8. Xiang, Ying & Yuan, Zili & Wang, Shixuan & Fan, Aiwu, 2019. "Effects of flow rate and fuel/air ratio on propagation behaviors of diffusion H2/air flames in a micro-combustor," Energy, Elsevier, vol. 179(C), pages 315-322.
    9. Peng, Qingguo & E, Jiaqiang & Yang, W.M. & Xu, Hongpeng & Chen, Jingwei & Meng, Tian & Qiu, Runzhi, 2018. "Effects analysis on combustion and thermal performance enhancement of a nozzle-inlet micro tube fueled by the premixed hydrogen/air," Energy, Elsevier, vol. 160(C), pages 349-360.
    10. Tang, Aikun & Cai, Tao & Deng, Jiang & Zhao, Dan & Huang, Qiuhan & Zhou, Chen, 2019. "Experimental study on flame structure transitions of premixed propane/air in micro-scale planar combustors," Energy, Elsevier, vol. 179(C), pages 558-570.
    11. Fan, Aiwu & Zhang, He & Wan, Jianlong, 2017. "Numerical investigation on flame blow-off limit of a novel microscale Swiss-roll combustor with a bluff-body," Energy, Elsevier, vol. 123(C), pages 252-259.
    12. Peng, Qingguo & Jiaqiang, E & Yang, W.M. & Xu, Hongpeng & Chen, Jingwei & Zhang, Feng & Meng, Tian & Qiu, Runzhi, 2019. "Experimental and numerical investigation of a micro-thermophotovoltaic system with different backward-facing steps and wall thicknesses," Energy, Elsevier, vol. 173(C), pages 540-547.
    13. Bani, Stephen & Pan, Jianfeng & Tang, Aikun & Lu, Qingbo & Zhang, Yi, 2018. "Numerical investigation of key parameters of the porous media combustion based Micro-Thermophotovoltaic system," Energy, Elsevier, vol. 157(C), pages 969-978.
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