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Large eddy simulation of plasma-assisted ignition and combustion in a coaxial jet combustor

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  • Dong, Ming
  • Cui, Jinglong
  • Jia, Ming
  • Shang, Yan
  • Li, Sufen

Abstract

To study the effect of plasma O3 on the combustion-supporting process for a coaxial jet combustor, large eddy simulation (LES)-partially stirred reactor (PaSR) simulation of a methane/air turbulent diffusion combustion was carried out based on OpenFOAM open-source software platform. The prediction of the turbulent diffusion flame was verified, and the results are in good agreement with the experiment data. Then the effect of air discharge product (i.e., O3) on the methane ignition and combustion process was investigated using plasma-assisted combustion model by 341 steps detailed reaction mechanism. The results show that the addition of O3 can increase the speed of flame propagation and accelerate the ignition process of methane combustion. It is also found that the vortex structure with O3 is more continuous in the recirculation zone, and the flame recirculation zone with O3 is closer to the inlet. The effect of O3 on enhanced combustion is more obvious in the low-temperature region, while the axial-velocity ratio with O3 is considerably improved in the high-temperature region. Besides, the plasma O3 will reduce the fluctuation of vx′vx’, especially at the peak point, which will tend to stabilize the recirculation zone.

Suggested Citation

  • Dong, Ming & Cui, Jinglong & Jia, Ming & Shang, Yan & Li, Sufen, 2020. "Large eddy simulation of plasma-assisted ignition and combustion in a coaxial jet combustor," Energy, Elsevier, vol. 199(C).
    • Handle: RePEc:eee:energy:v:199:y:2020:i:c:s0360544220305703
    DOI: 10.1016/j.energy.2020.117463
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    References listed on IDEAS

    as
    1. Gong, Changming & Yu, Jiawei & Wang, Kang & Liu, Jiajun & Huang, Wei & Si, Xiankai & Wei, Fuxing & Liu, Fenghua & Han, Yongqiang, 2018. "Numerical study of plasma produced ozone assisted combustion in a direct injection spark ignition methanol engine," Energy, Elsevier, vol. 153(C), pages 1028-1037.
    2. Yingzu Liu & Zhihua Wang & Liang Li & Kaidi Wan & Kefa Cen, 2018. "Reaction Mechanism Reduction for Ozone-Enhanced CH 4 /Air Combustion by a Combination of Directed Relation Graph with Error Propagation, Sensitivity Analysis and Quasi-Steady State Assumption," Energies, MDPI, vol. 11(6), pages 1-12, June.
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    Cited by:

    1. Guo, Kaifang & Sun, Dechuan & Zeng, Zhuoxiong, 2023. "Numerical study of ignition process in vortex cold wall combustion chamber," Energy, Elsevier, vol. 262(PA).
    2. Bolegenova, Saltanat & Askarova, Аliya & Georgiev, Aleksandar & Nugymanova, Aizhan & Maximov, Valeriy & Bolegenova, Symbat & Mamedov, Bolat, 2023. "The use of plasma technologies to optimize fuel combustion processes and reduce emissions of harmful substances," Energy, Elsevier, vol. 277(C).
    3. Joo, Seongpil & Choi, Jongwun & Lee, Min Chul & Kim, Namkeun, 2021. "Prognosis of combustion instability in a gas turbine combustor using spectral centroid & spread," Energy, Elsevier, vol. 224(C).

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    More about this item

    Keywords

    Coaxial jet combustor; Plasma O3; LES; Ignition; Enhanced combustion;
    All these keywords.

    JEL classification:

    • O3 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights

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