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<p>Using high-speed filming, we have established a number of experimental features of the interaction of counter flames of diluted stoichiometric methane–oxygen mixtures in a closed cylindrical reactor at a simultaneous initiation of combustion by a spark discharge at opposite ends. It has been experimentally established that in interaction of counter flames in an initial density–nonstratified gas mixture, only three-dimensional structures are registered in hot combustion products. It is shown that under the conditions of gas density stratification, three-dimensional flames, after interaction, form flat two-dimensional structures that can propagate beyond the zone of interaction of counter flames. A three-dimensional modeling of the specific features of interaction of counter flames of methane–oxygen mixtures in nonstratified gas in hot combustion products has been carried out using the ANSYS Fluent 19 R1 software package. It has been established that the model used in the work yields a satisfactory qualitative description of the experimental features of the interaction of counter flames in both homogeneous and density-stratified media.</p>

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Interaction of Counter Flames in Methane–Oxygen Mixtures in a Closed Reactor under a Pressure Less than Atmospheric Pressure

  • 期刊论文

  • 发表日期：

    2026年3月1日

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  • K. Ya. Troshin,
  • N. M. Rubtsov,
  • V. I. Chernysh,
  • G. I. Tsvetkov

摘要

Using high-speed filming, we have established a number of experimental features of the interaction of counter flames of diluted stoichiometric methane–oxygen mixtures in a closed cylindrical reactor at a simultaneous initiation of combustion by a spark discharge at opposite ends. It has been experimentally established that in interaction of counter flames in an initial density–nonstratified gas mixture, only three-dimensional structures are registered in hot combustion products. It is shown that under the conditions of gas density stratification, three-dimensional flames, after interaction, form flat two-dimensional structures that can propagate beyond the zone of interaction of counter flames. A three-dimensional modeling of the specific features of interaction of counter flames of methane–oxygen mixtures in nonstratified gas in hot combustion products has been carried out using the ANSYS Fluent 19 R1 software package. It has been established that the model used in the work yields a satisfactory qualitative description of the experimental features of the interaction of counter flames in both homogeneous and density-stratified media.