On the Hysteresis Phenomenon of Turbulent Lifted Diffusion Methane Flame

Akbarzadeh, Mohsen; Birouk, Madjid

doi:10.1007/s10494-014-9573-1

Cited by 4 publications

(2 citation statements)

References 36 publications

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“…The nondimensional flame length and liftoff distance of horizontally oriented jet fires can be expressed as eqs and , respectively. Akbarzadeh ,, and Kalghatgi have investigated the liftoff height of coflowing and still air turbulent jet flame, and they revealed that the liftoff height was nearly independent of the orifice diameter. The flame length of horizontally released jet fire is related to the Froude number.…”

Section: Theoretical Modelmentioning

confidence: 99%

“…They obtained that the level of turbulence in the jet near-field is higher for the rectangular nozzle than that for the circular nozzle. Akbarzadeh and Birouk also investigated the effect of nozzle outlet geometry (orifice diameter and lip thickness) on flame liftoff height and flow characteristics, and the correlation of flame liftoff height in the hysteresis region was developed. For the rectangular orifice jet flame, Akbarzadeh and Birouk − conducted some experiments and numerical simulations to reveal the jets and flame characteristics of coflowing turbulent flame and free jet issuing from the rectangular nozzle.…”

Section: Introductionmentioning

confidence: 99%

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Radiant Heat Flux Profile of Horizontally Oriented Rectangular Source Fuel Jet Fires

Huang

Dong

2018

Ind. Eng. Chem. Res.

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A series of numerical simulations were performed to investigate the flame radiant heat flux of horizontally oriented jet fires by rectangular source fuel with the same orifice area (400 mm 2 ) but different aspect ratios (1, 2, 4). The natural gas was carried out as fuel, of which the jet velocity varied from 27.5 to 205.8 m/s. The nondimensional radiant heat flux was defined to reveal the effect of fuel jet velocity and orifice aspect ratio on radiant heat flux. Results show that the flame size increases with the increasing fuel jet velocity and the larger orifice aspect ratio results in shorter flame length. The radiant heat flux is affected by the orifice aspect ratio as the different soot particle distribution. The predicted model to characterize the radiant heat flux is proposed by taking the orifice aspect ratio into account. The prediction results of proposed model agree well with the simulated data and previous experimental results.

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