On the “tulip flame” phenomenon

Clanet, Christophe; Searby, Geoffrey

doi:10.1016/0010-2180(95)00195-6

Cited by 405 publications

(230 citation statements)

References 8 publications

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“…3(b). The calculation grid is modified periodically in the course of calculation, so that the sizes and positions of all domains in rate increases by order of magnitude in the process of precursor acceleration [29,30]. As a result, quite quickly the Mach number Ma lab becomes comparable to unity.…”

Section: Basic Equations Of the Direct Numerical Simulationsmentioning

confidence: 99%

Heating of the fuel mixture due to viscous stress ahead of accelerating flames in deflagration-to-detonation transition

et al. 2008

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The role of viscous stress in heating of the fuel mixture in deflagration-to-detonation transition in tubes is studied both analytically and numerically. The analytical theory is developed in the limit of low Mach number; it determines temperature distribution ahead of an accelerating flame with maximum achieved at the walls. The heating effects of viscous stress and the compression wave become comparable at sufficiently high values of the Mach number. In the case of relatively large Mach number, viscous heating is investigated by direct numerical simulations.The simulations were performed on the basis of compressible Navier-Stokes gas-dynamic equations taking into account chemical kinetics. In agreement with the theory, viscous stress makes heating and explosion of the fuel mixture preferential at the walls. The explosion develops in an essentially multi-dimensional way, with fast spontaneous reaction spreading along the walls and pushing inclined shocks. Eventually, the combination of explosive reaction and shocks evolves into detonation.

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Section: Basic Equations Of the Direct Numerical Simulationsmentioning

confidence: 99%

Heating of the fuel mixture due to viscous stress ahead of accelerating flames in deflagration-to-detonation transition

et al. 2008

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“…There are also other opinions on the tulipflame formation mechanism. According to some of them, the formation of the tulip flame is a manifestation of Taylor instability driven by the deceleration of the flame tip (Clanet and Searby, 1996).…”

Section: Closed-tube Combustionmentioning

confidence: 99%

Study of Gas Combustion in a Vented Cylindrical Vessel

et al. 2005

Combustion Science and Technology

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“…In most simulation runs, thermal expansion was chosen as 8   , which is typical for the burning of alkane hydrocarbons. However, other expansion factors 16 …”

Section: Direct Numerical Simulationsmentioning

confidence: 99%

“…flame interaction with turbulent vortices [8][9][10][11], intrinsic flame instabilities [2,[12][13][14][15], ignition peculiarities [16,17], flame-acoustic interactions [18,19], etc. It is however noted that, for flames in tubes/channels, the role of turbulence and flame instabilities is rather supplementary as compared to either the Shelkin mechanism in smooth tubes [3,7,[20][21][22][23][24] or acceleration in tubes with obstacles [25,26].…”

Section: Introductionmentioning

confidence: 99%

Analysis of flame acceleration induced by wall friction in open tubes

2010

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Spontaneous flame acceleration leading to explosion triggering in open tubes/channels due to wall friction was analytically and computationally studied. It was first demonstrated that the acceleration is effected when the thermal expansion across the flame exceeds a critical value depending on the combustion configuration. For the axisymmetric flame propagation in cylindrical tubes with both ends open, a theory of the initial (exponential) stage of flame acceleration in the quasi-isobaric limit was developed and substantiated by extensive numerical simulation of the hydrodynamics and combustion with an Arrhenius reaction. The dynamics of the flame shape, velocity, and acceleration rate, as well as the velocity profile ahead and behind the flame, have been determined.

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On the “tulip flame” phenomenon

Cited by 405 publications

References 8 publications

Heating of the fuel mixture due to viscous stress ahead of accelerating flames in deflagration-to-detonation transition

Heating of the fuel mixture due to viscous stress ahead of accelerating flames in deflagration-to-detonation transition

Study of Gas Combustion in a Vented Cylindrical Vessel

Analysis of flame acceleration induced by wall friction in open tubes

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