Comparative Studies on Gas and Spray Flame Structures by LES

  • ZHOU Lixing
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  • Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China

Online published: 2025-07-04

Supported by

This study is sponsored by the Project of National Natural Science Foundation of China under the Grant 51390493.

Copyright

Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2025

Abstract

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.

Cite this article

ZHOU Lixing . Comparative Studies on Gas and Spray Flame Structures by LES[J]. Journal of Thermal Science, 2025 , 34(4) : 1474 -1482 . DOI: 10.1007/s11630-025-2114-5

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