Formation and evolution of distorted tulip flames

Xiao, Huahua; Houim, Ryan W.; Oran, Elaine S.

doi:10.1016/j.combustflame.2015.08.020

Cited by 212 publications

(53 citation statements)

References 55 publications

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“…Recent experimental [16] and numerical [17,18] studies show that a TF is a fluid-dynamic phenomenon arising from interactions between flame and fluid motion, instead of an instability. A similar observation was also make in our prior work [5].…”

supporting

confidence: 89%

“…waves. Among these phenomena, pressure waves have a direct effect on flame instabilities, as shown in experiments [1,2] and numerical simulations [3][4][5].…”

mentioning

confidence: 91%

“…Tulip flames have given rise to many studies with the purposes of explaining their physical origin [5,[7][8][9][14][15][16]. Empirical and analytical models [9,10] have also been suggested for TF evolution.…”

mentioning

confidence: 99%

“…(See Fig. 1 The recent discovery of the distorted tulip flame (DTF) further complicates the situation [5,[19][20][21]. A DTF, which can be generated after the formation of a TF, has additional cusps or indentations superimposed on a primary flame surface.…”

mentioning

confidence: 99%

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Effects of pressure waves on the stability of flames propagating in tubes

Xiao

Houim

Oran

2017

Proceedings of the Combustion Institute

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136

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Numerical simulations were performed to study the effects of pressure waves on the evolution and stability of flames propagating in tubes. The model is the fully compressible reactive Navier-Stokes equations coupled to a calibrated one-step chemical-diffusive model for combustion in a stoichiometric hydrogen-air mixture. The numerical solution method is high order in space and time, and adaptive mesh refinement provides adequate resolution of flames, boundary layers, acoustic waves, and all of their interactions. The influence of tube length scale and aspect ratio was examined for a range of tube sizes that produce tulip flames (TFs) and series of distorted tulip flames (DTFs). The simulations show that pressure waves and acoustic properties of the tube play an important role in the flame evolution, specifically in the formation and evolution of the series of increasingly wrinkled DTFs. A time scale and pressure wave analysis of the results, combined with a linear analysis to give the growth rate of the Rayleigh-Taylor instability (RTI), shows that the RTI is a primary cause for the initiation of DTFs.

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supporting

confidence: 89%

“…waves. Among these phenomena, pressure waves have a direct effect on flame instabilities, as shown in experiments [1,2] and numerical simulations [3][4][5].…”

mentioning

confidence: 91%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Effects of pressure waves on the stability of flames propagating in tubes

Xiao

Houim

Oran

2017

Proceedings of the Combustion Institute

Self Cite

136

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“…After a weak ignition, four flame morphologies in the early stages can be distinguished in pipes/tubes [43]: (1) hemispherical flame; (2) finger-shaped flame; (3) skirt of flame front touching the sidewalls and (4) tulip flame. Xiao et al [44] found a new fifth morphology, "distorted tulip" flame, which is characterized by Rayleigh-Taylor instability driven by pressure waves [45,46]. The sketch of these morphologies is shown in Figure 5.…”

Section: Dynamics Of Flame Developmentmentioning

confidence: 98%

Flame quenching by crimped ribbon flame arrestor: A brief review

Wang

Shen

et al. 2018

Process Safety Progress

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Accidental explosions in gas/oil pipelines remain one major concern in process industries. The crimped ribbon flame arrestor is an effective device to prevent flame propagation. This review summarizes existing knowledge on the quenching of flame of different regimes in narrow channels and crimped ribbon flame arrestors. The influences of various parameters (e.g., arrestor element thickness, expansion ratio, system pressure) on the performance of crimped ribbon flame arrestors are discussed. The presented discussions give a better understanding on the considerations which must be taken into account to quench an explosion successfully. Other scenarios, such as quenching of two-phase vapor-liquid explosions and overdriven detonations should be got further attention. Figure 18. The results of quenching ethylene/air/oxygen flames by a DN50 flame arrestor [114]. Black dot: flame quenched; red cross: flame not quenched. [Color figure can be viewed at wileyonlinelibrary.com]

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Large eddy simulation investigation of flame acceleration and deflagration to detonation transition of methane‐air mixture in rectangular channel

Zhao

Zhang²

2022

Engineering Reports

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Large eddy simulation is used to simulate flame acceleration and deflagration to detonation transition of methane-air mixtures in a small-scale 3D channel. The simulation results show the changing of the flame surface 3D structure in the stage of flame acceleration and deflagration to detonation transition. In the first stage, the flame velocity increases exponentially because of the expansion of combustion products and the wrinkle of flame surface. In the next stage, the interaction between flame and pressure wave makes flame accelerate continuously, and the acceleration rate of the flame velocity decreases first and then increases. As the pressure of the leading shock increases, the boundary layer is heated by the preheating area in front of the flame surface at the channel wall. Because the cross section of the channel is square, the ultrafast flame first appears in the boundary layer of the four inner edges between the channel wall, then it appears in the boundary layer on the channel wall. The ultrafast flame generates oblique shock waves continuously moving to the center of the channel and colliding with each other, which promote the occurrence of local explosion and the coupling of flame surface and leading shock wave.

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Formation and evolution of distorted tulip flames

Cited by 212 publications

References 55 publications

Effects of pressure waves on the stability of flames propagating in tubes

Effects of pressure waves on the stability of flames propagating in tubes

Flame quenching by crimped ribbon flame arrestor: A brief review

Large eddy simulation investigation of flame acceleration and deflagration to detonation transition of methane‐air mixture in rectangular channel

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