2003
DOI: 10.2514/2.2088
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A Mechanism for Flame Acceleration in Narrow Tubes

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Cited by 87 publications
(50 citation statements)
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“…Since turbulence and turbulent burning are not so well-understood yet, it presents a major obstacle in developing a theory of flame acceleration and DDT. Only recently a constructive idea was suggested that DDT may be achieved even in a laminar flow in tubes with adiabatic walls [7,8]. Though it is difficult to obtain adiabatic walls in a real experiment, these conditions may be easily imitated in direct numerical simulations [7,8].…”
Section: Introductionmentioning
confidence: 99%
“…Since turbulence and turbulent burning are not so well-understood yet, it presents a major obstacle in developing a theory of flame acceleration and DDT. Only recently a constructive idea was suggested that DDT may be achieved even in a laminar flow in tubes with adiabatic walls [7,8]. Though it is difficult to obtain adiabatic walls in a real experiment, these conditions may be easily imitated in direct numerical simulations [7,8].…”
Section: Introductionmentioning
confidence: 99%
“…At the same time, the promotion of these processes is expected to improve advanced combustion technologies such as pulse-detonation and rotationdetonation engines as well as micro-combustors. Among the geometries associated with flame acceleration [1,2] and DDT [3][4][5], obstructed pipes, presumably, provide the fastest regime of burning. While flame propagation through obstacles is often associated with turbulence [6] or shocks [7], a shockless, laminar and inviscid mechanism of extremely fast acceleration has been found for flame spreading through a "tooth-brush" array of obstacles in a "semi-open" pipe [8][9][10].…”
Section: Introductionmentioning
confidence: 99%
“…(1)- (3) for the case of complete burning a d = 0; the result is plotted by the solid red curve in Fig. 3 for the scaled energy release (γ − 1)Q/(γ P 0 V 0 ) = 9, corresponding to acetylene-air combustion [23]. The red curve (for detonation) corresponds to higher pressure for the same volume than the blue curve (for a shock) due to the energy release in a detonation front.…”
Section: Basic Features Of Gaseous Combustion Detonationmentioning
confidence: 99%
“…3) is specified by reaction kinetics of a particular fuel mixture. Here we illustrate the detonation structure for the simplified model of acetylene-air combustion described by a single one-step Arrhenius reaction [23],…”
Section: Basic Features Of Gaseous Combustion Detonationmentioning
confidence: 99%