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Premixed Propane–Air Flame Propagation in a Narrow Channel with Obstacles

Author

Listed:
  • Sergey Yakush

    (Department of Physics, Novosibirsk State University, 630058 Novosibirsk, Russia
    Ishlinsky Institute for Problems in Mechanics RAS, 119526 Moscow, Russia)

  • Oleg Semenov

    (Department of Experimental Physics, Surgut State University, 628412 Surgut, Russia)

  • Maxim Alexeev

    (Department of Experimental Physics, Surgut State University, 628412 Surgut, Russia)

Abstract

Flame interaction with obstacles can affect significantly its behavior due to flame front wrinkling, changes in the flame front surface area, and momentum and heat losses. Experimental and theoretical studies in this area are primarily connected with flame acceleration and deflagration to detonation transition. This work is devoted to studying laminar flames propagating in narrow gaps between closely spaced parallel plates (Hele–Shaw cell) in the presence of internal obstacles separating the rectangular channel in two parts (closed and open to the atmosphere) connected by a small hole. The focus of the research is on the penetration of flames through the hole to the adjacent channel part. Experiments are performed for fuel-rich propane–air mixtures; combustion is initiated by spark ignition near the far end of the closed volume. Additionally, numerical simulations are carried out to demonstrate the details of flame behavior prior to and after penetration into the adjacent space. The results obtained may be applicable to various microcombustors; they are also relevant to fire and explosion safety where flame propagation through leakages may promote fast fire spread.

Suggested Citation

  • Sergey Yakush & Oleg Semenov & Maxim Alexeev, 2023. "Premixed Propane–Air Flame Propagation in a Narrow Channel with Obstacles," Energies, MDPI, vol. 16(3), pages 1-19, February.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:3:p:1516-:d:1056959
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    References listed on IDEAS

    as
    1. Xiangzhou Feng & Xiqiao Huang, 2022. "Influence of Variable Blocking Ratio on DDT Process," Energies, MDPI, vol. 15(20), pages 1-17, October.
    2. Bingang Guo & Jianfeng Gao & Bin Hao & Bingjian Ai & Bingyuan Hong & Xinsheng Jiang, 2022. "Experimental and Numerical Study on the Explosion Dynamics of the Non-Uniform Liquefied Petroleum Gas and Air Mixture in a Channel with Mixed Obstacles," Energies, MDPI, vol. 15(21), pages 1-16, October.
    3. Jianfeng Gao & Bingjian Ai & Bin Hao & Bingang Guo & Bingyuan Hong & Xinsheng Jiang, 2022. "Effect of Obstacles Gradient Arrangement on Non-Uniformly Distributed LPG–Air Premixed Gas Deflagration," Energies, MDPI, vol. 15(19), pages 1-15, September.
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