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Numerical study of the effects of wire insertion on CH4(methane)/AIR pre-mixed flame in a micro combustor

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  • Baigmohammadi, Mohammadreza
  • Sarrafan Sadeghi, Soroush
  • Tabejamaat, Sadegh
  • Zarvandi, Jalal

Abstract

In this study, an approach to modify and improve of CH4(methane)/air pre-mixed flame in a micro-stepped tube combustor is numerically studied. The effects of wire on flame in micro combustor are calculated using a high order, high accuracy 2D steady state code. The results show that the wire insertion within a micro combustor has significant effects on stabilizing of the flame in a micro combustor. Also, the wire insertion method is strongly able to modify the flame location within a micro combustor. In such a manner, applying this method can guarantee the flame presence in some certain conditions in comparison to the simple backward facing step method. The wire insertion method improves the combustion process by activating the chemical reactions which have main effect on the combustion initiation. Moreover, it is shown that the wire insertion method can effectively improve and also increase temperature distribution and its level along the wall and the axis of the micro combustor. Meanwhile, it is shown that the wall thermal conductivity and its outer surface emissivity coefficient with the convective heat transfer coefficient on the outer wall of the micro combustor have great influences on combustion characteristics.

Suggested Citation

  • Baigmohammadi, Mohammadreza & Sarrafan Sadeghi, Soroush & Tabejamaat, Sadegh & Zarvandi, Jalal, 2013. "Numerical study of the effects of wire insertion on CH4(methane)/AIR pre-mixed flame in a micro combustor," Energy, Elsevier, vol. 54(C), pages 271-284.
    • Handle: RePEc:eee:energy:v:54:y:2013:i:c:p:271-284
    DOI: 10.1016/j.energy.2013.01.047
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    References listed on IDEAS

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    1. Khu, Kerwin & Jiang, Liudi & Markvart, Tom, 2011. "Effect of finite heat input on the power performance of micro heat engines," Energy, Elsevier, vol. 36(5), pages 2686-2692.
    2. Zarvandi, Jalal & Tabejamaat, Sadegh & Baigmohammadi, Mohammadreza, 2012. "Numerical study of the effects of heat transfer methods on CH4/(CH4 + H2)-AIR pre-mixed flames in a micro-stepped tube," Energy, Elsevier, vol. 44(1), pages 396-409.
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    Cited by:

    1. He, Ziqiang & Yan, Yunfei & Zhao, Ting & Zhang, Zhien & Mikulčić, Hrvoje, 2022. "Parametric study of inserting internal spiral fins on the micro combustor performance for thermophotovoltaic systems," Renewable and Sustainable Energy Reviews, Elsevier, vol. 165(C).
    2. Wan, Jianlong & Fan, Aiwu & Yao, Hong & Liu, Wei, 2016. "Experimental investigation and numerical analysis on the blow-off limits of premixed CH4/air flames in a mesoscale bluff-body combustor," Energy, Elsevier, vol. 113(C), pages 193-203.
    3. 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.
    4. 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.
    5. Tang, Aikun & Deng, Jiang & Cai, Tao & Xu, Yiming & Pan, Jianfeng, 2017. "Combustion characteristics of premixed propane/hydrogen/air in the micro-planar combustor with different channel-heights," Applied Energy, Elsevier, vol. 203(C), pages 635-642.
    6. Baigmohammadi, Mohammadreza & Tabejamaat, Sadegh & Zarvandi, Jalal, 2015. "Numerical study of the behavior of methane-hydrogen/air pre-mixed flame in a micro reactor equipped with catalytic segmented bluff body," Energy, Elsevier, vol. 85(C), pages 117-144.
    7. Rana, Uttam & Chakraborty, Suman & Som, S.K., 2014. "Thermodynamics of premixed combustion in a heat recirculating micro combustor," Energy, Elsevier, vol. 68(C), pages 510-518.
    8. Wan, Jianlong & Zhao, Haibo, 2017. "Dynamics of premixed CH4/air flames in a micro combustor with a plate flame holder and preheating channels," Energy, Elsevier, vol. 139(C), pages 366-379.
    9. 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).
    10. Rana, Uttam & Chakraborty, Suman & Som, S.K., 2017. "Prediction of flame speed and exergy analysis of premixed flame in a heat recirculating cylindrical micro combustor," Energy, Elsevier, vol. 126(C), pages 658-670.
    11. Wang, Wei & Zuo, Zhengxing & Liu, Jinxiang, 2019. "Numerical study of the premixed propane/air flame characteristics in a partially filled micro porous combustor," Energy, Elsevier, vol. 167(C), pages 902-911.
    12. Wan, Jianlong & Zhao, Haibo, 2020. "Effect of conjugate heat exchange of flame holder on laminar premixed flame stabilization in a meso-scale diverging combustor," Energy, Elsevier, vol. 198(C).
    13. 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.
    14. E, Jiaqiang & Luo, Bo & Han, Dandan & Chen, Jingwei & Liao, Gaoliang & Zhang, Feng & Ding, Jiangjun, 2022. "A comprehensive review on performance improvement of micro energy mechanical system: Heat transfer, micro combustion and energy conversion," Energy, Elsevier, vol. 239(PE).
    15. Wan, Jianlong & Fan, Aiwu & Yao, Hong & Liu, Wei, 2015. "Effect of pressure on the blow-off limits of premixed CH4/air flames in a mesoscale cavity-combustor," Energy, Elsevier, vol. 91(C), pages 102-109.
    16. Tan, Yan & E, Jiaqiang & Chen, Jingwei & Liao, Gaoliang & Zhang, Feng & Li, Jintao, 2022. "Investigation on combustion characteristics and thermal performance of a three rearward-step structure micro combustor fueled by premixed hydrogen/air," Renewable Energy, Elsevier, vol. 186(C), pages 486-504.
    17. Veeraragavan, Ananthanarayanan, 2015. "On flame propagation in narrow channels with enhanced wall thermal conduction," Energy, Elsevier, vol. 93(P1), pages 631-640.
    18. Alipoor, Alireza & Mazaheri, Kiumars, 2014. "Studying the repetitive extinction-ignition dynamics for lean premixed hydrogen-air combustion in a heated microchannel," Energy, Elsevier, vol. 73(C), pages 367-379.

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    More about this item

    Keywords

    Micro-tube; Step; CH4; Air; Wire; Numerical study;
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