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<p>To compare structures of turbulent gas and spray flames is helpful for understanding the effect of evaporating droplets on turbulence and turbulent combustion. Presently some investigators did studies on the effect of turbulence on droplet evaporation and the effect of droplet combustion on turbulence, and most of studies paid attention to the time-averaged results. In this paper, the specific feature is to give a review for comparative studies on instantaneous structures of turbulent methane-air jet gas flame, ethanol jet spray flame, methane-air swirling gas flame and heptane-air swirling spray flame by large-eddy simulation (LES) using a second-order moment (SOM) combustion model. The results show that evaporating droplets enhance turbulence and turbulent combustion.</p>

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Comparative Studies on Gas and Spray Flame Structures by LES

  • 期刊论文

  • 发表日期：

    2025年4月2日

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  • Lixing Zhou

摘要

To compare structures of turbulent gas and spray flames is helpful for understanding the effect of evaporating droplets on turbulence and turbulent combustion. Presently some investigators did studies on the effect of turbulence on droplet evaporation and the effect of droplet combustion on turbulence, and most of studies paid attention to the time-averaged results. In this paper, the specific feature is to give a review for comparative studies on instantaneous structures of turbulent methane-air jet gas flame, ethanol jet spray flame, methane-air swirling gas flame and heptane-air swirling spray flame by large-eddy simulation (LES) using a second-order moment (SOM) combustion model. The results show that evaporating droplets enhance turbulence and turbulent combustion.