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Abstract <p>The concept of plasma-assisted combustion, which has a series of advantages (reduced ignition time, improved mixing, flame front stabilization), is considered. The work provides the results of a study of the ignition process using a longitudinal direct current discharge of a fuel–air mixture injected at supersonic speed into the core of a supersonic air flow. In order to exclude the influence of mixing, the fuel (ethylene) was premixed with the oxidizer (air). The constructed system for mixing ethylene with air and the system for injecting the resulting mixture into the test section channel are described. For this setup configuration, the results of gas flow simulation in the FlowVision package and the results of experiments on fuel ignition in a supersonic flow are provided.</p>

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Ignition of a Supersonic Jet of Premixed Fuel–Air Mixture in a Supersonic Air Flow Using an Electric Discharge

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • R. S. Troshkin,
  • L. S. Volkov,
  • A. A. Firsov

摘要

Abstract

The concept of plasma-assisted combustion, which has a series of advantages (reduced ignition time, improved mixing, flame front stabilization), is considered. The work provides the results of a study of the ignition process using a longitudinal direct current discharge of a fuel–air mixture injected at supersonic speed into the core of a supersonic air flow. In order to exclude the influence of mixing, the fuel (ethylene) was premixed with the oxidizer (air). The constructed system for mixing ethylene with air and the system for injecting the resulting mixture into the test section channel are described. For this setup configuration, the results of gas flow simulation in the FlowVision package and the results of experiments on fuel ignition in a supersonic flow are provided.