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<p>The purpose of this work is to parametric study of the iron particle cloud combustion in stagnant hot air using numerical simulations. A code is developed to solve governing equations of two-phase reacting compressible media, and the transient simulations are performed to investigate the impacts of some input parameters on combustion process, at low-speed burners. It is shown that a sudden pressure drop may occur for big particle sizes at the end of ignition phase, which is lower than pressure drop of the heating phase. In addition, it is illustrated that an iso-thermalization time scale is very smaller than heating plus ignition time scales. Finally, it is demonstrated how much the preheating of iron particle can reduce the overall combustion time scale, which is important in utilizing such a fuel instead of common fuels in burners, practically.</p>

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Simulation study on the combustion characteristics of iron powder as clean fuel in burners

  • 期刊论文

  • 发表日期：

    2026年5月8日

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  • Mohammad Reza Tavakoli,
  • Amir Mahdi Tahsini

摘要

The purpose of this work is to parametric study of the iron particle cloud combustion in stagnant hot air using numerical simulations. A code is developed to solve governing equations of two-phase reacting compressible media, and the transient simulations are performed to investigate the impacts of some input parameters on combustion process, at low-speed burners. It is shown that a sudden pressure drop may occur for big particle sizes at the end of ignition phase, which is lower than pressure drop of the heating phase. In addition, it is illustrated that an iso-thermalization time scale is very smaller than heating plus ignition time scales. Finally, it is demonstrated how much the preheating of iron particle can reduce the overall combustion time scale, which is important in utilizing such a fuel instead of common fuels in burners, practically.