Experimental study on flame merging behaviors from two pool fires along the longitudinal centerline of model tunnel with natural ventilation

Ji, Jie; Wan, Huaxian; Gao, Zihe; Fu, Yangyang; Sun, Jinhua; Zhang, Yongming; Li, Kaiyuan; Hostikka, Simo

doi:10.1016/j.combustflame.2016.08.020

Cited by 104 publications

(11 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It was found that the burning rate of multiple pool fires with luminous flames increases first and then decreases with decreasing the spacing [9,13]. Similar trend of burning rate against spacing was found by Ji et al [16] for the investigation of two parallel pool fires located in a tunnel and also by Fan and Tang [17] for the study of two parallel pool fires under different wind velocities. Liu et al [13] attributed the non-monotonic trend as a result of the competition between the heat feedback enhancement and the air entrainment restriction.…”

Section: Introductionsupporting

confidence: 76%

Effects of pool size and spacing on burning rate and flame height of two square heptane pool fires

Wan

Gao

et al. 2019

Journal of Hazardous Materials

Self Cite

View full text Add to dashboard Cite

show abstract

Section: Introductionsupporting

confidence: 76%

Effects of pool size and spacing on burning rate and flame height of two square heptane pool fires

Wan

Gao

et al. 2019

Journal of Hazardous Materials

Self Cite

View full text Add to dashboard Cite

show abstract

“…It is well known that the flame centerline temperature varies with the total heat release rate (depends on MLR) and ambient pressure at different heights . Take the experiments at 6 kPa/min during pressurization and depressurization as examples in Figure .…”

Section: Results and Conclusionmentioning

confidence: 99%

Effects of static pressure, pressurization, and depressurization on n‐heptane pool fires in an airplane cargo compartment

Yang

Yao

et al. 2019

Fire and Materials

View full text Add to dashboard Cite

Summary The cargo compartment of an airplane in flight is a complex environment with dynamic pressure (pressurization and depressurization), nonconservative oxygen, and unidirectional ventilation. In this study, n‐heptane pool fires were performed under static pressure, pressurization, and depressurization in a full‐scale airplane cargo compartment. The static pressure included 30 and 90 kPa, the pressurization was from 30 to 90 kPa at rates of 6, 12, 19, and 25 kPa/min, while the depressurization was from 90 to 30 kPa at rates of 6, 12, 17, and 20 kPa/min. The effects of pressure, oxygen concentration, and ventilation on pool fire characteristics including fuel mass loss rate (MLR), flame centerline temperature, and flame shape under each condition were concluded. The results show that the predominant factor of MLR was different in three conditions. The flame is divided into four regimes, in which the fuel vapor regime is used to emphasize the influence of fuel vapor on flame temperature above the fuel surface. The concept of average flame shape is put forward to reflect the flame occurrence probability. And its bottom, which named average flame root, presents the negative correlation with compartment pressure.

show abstract

“…The efficiency of combustion was a focused parameter for the wood crib burner, which the combustion efficiency increases with the higher separation distance between wood cribs. Another study was conducted in a scaled tunnel from a heptane pool fire burner with speed variations of wind effect [6]. From the study, it was acquired that the fire will decrease at first but rapid increase in temperature and flame coverage after that.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Flame Merging Phenomenon

Famaretha,

Santoso,

Nugroho

2024

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

No less than 350 housing fires happened each year during 2016-2021 in DKI Jakarta. Fatality is fortunately not a common issue, but it was predicted that 200 billion rupiahs losses annually from the fires. Narrow spaces with a bulk of people housing make the fire spread faster. Fire burns, whichever is the ‘ready-to-burn’ first, so it cannot be expected one house is already burned out first, then the fire will continue to the next house. From this phenomenon, it potentially has more than one hotspot from the fire that can grow bigger with a flame merging situation. For a better understanding of fire merging phenomenon, experimental study was reported in this work. The study was conducted on a laboratory scale experiment with the variation of the separation distance between the fire sources. The separation distance was set to be 0; 5; 10 cm. The fire source was shredded paper which is placed in cylindrical baskets having diameters of 5 cm, 10 cm, and 15 cm. The experimental data were recorded by using K-type thermocouple, visual and thermal cameras, and a scale. The results show that the probability of flame merging increases with the diameter of baskets. The temperature and flame height increase as the flame merging phenomenon occurs. However, flame merging does not have a direct impact on combustion efficiency based on this experiment.

show abstract

Experimental study on flame merging behaviors from two pool fires along the longitudinal centerline of model tunnel with natural ventilation

Cited by 104 publications

References 54 publications

Effects of pool size and spacing on burning rate and flame height of two square heptane pool fires

Effects of pool size and spacing on burning rate and flame height of two square heptane pool fires

Effects of static pressure, pressurization, and depressurization on n‐heptane pool fires in an airplane cargo compartment

Experimental Study on Flame Merging Phenomenon

Contact Info

Product

Resources

About