Experiments and modeling of the temperature profile of turbulent diffusion flames with large ullage heights

Zhao, Jinlong; Zhang, Xiang; Song, Guangheng; Hong, Hui; Zhang, Jianping

doi:10.1016/j.fuel.2022.125876

Fuel

2023

DOI: 10.1016/j.fuel.2022.125876

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Experiments and modeling of the temperature profile of turbulent diffusion flames with large ullage heights

Jinlong Zhao

Xiang Zhang

Guangheng Song

et al.

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Cited by 7 publications

References 38 publications

(64 reference statements)

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Experimental Study and CFD Modelling of Down-Reaching Flame Behaviors of Tank Fires with Large Ullage Heights

Zhao,

Hu,

et al. 2024

Fire Technol

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This paper is aimed at studying the down-reaching flame behaviors of tank fires with large ullage heights. Experiments were first conducted using a gas burner in a transparent quartz glass cylinder to simulate the large ullage and the experimental data was used to validate the computational fluid dynamics (CFD) model. Subsequently the effects of ullage height, fuel velocity and burner diameter on the flame behaviors were examined systematically. Both experimental and numerical results showed that, for lower fuel velocities, the down-reaching flame height (hdown) is restricted by the ullage height. As the fuel velocity continues to increase exceeding a critical value, independent of the ullage height, hdown starts to decrease. For a given fuel velocity, hdown increases with an increase of the burner diameter owing to enhanced air entrainment. A detailed analysis of the flow field and oxygen concentration inside the tank at the steady burning stage was also carried out. Based on the numerical results and dimensionless analysis, a piecewise function was proposed to predict the down-reaching flame height and validated against the experimental data.

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Experimental Study and CFD Modelling of Down-Reaching Flame Behaviors of Tank Fires with Large Ullage Heights

Zhao,

Hu,

et al. 2024

Fire Technol

View full text Add to dashboard Cite

show abstract

Experimental investigation of effects of ullage height on the burning rate and heat feedback in pool fires

Zhang,

Zhao,

et al. 2024

Case Studies in Thermal Engineering

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Preparation of novel gel foam and its fire suppression performance against gasoline pool fires

Zhu,

Li,

Zhao

et al. 2024

Energy

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Experiments and modeling of the temperature profile of turbulent diffusion flames with large ullage heights

Cited by 7 publications

References 38 publications

Experimental Study and CFD Modelling of Down-Reaching Flame Behaviors of Tank Fires with Large Ullage Heights

Experimental Study and CFD Modelling of Down-Reaching Flame Behaviors of Tank Fires with Large Ullage Heights

Experimental investigation of effects of ullage height on the burning rate and heat feedback in pool fires

Preparation of novel gel foam and its fire suppression performance against gasoline pool fires

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