2016
DOI: 10.1080/13647830.2016.1178399
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Deflagration-to-detonation transition in narrow channels: hydraulic resistance versus flame folding

Abstract: This paper is concerned with the identification of the key interactions controlling the deflagration-to-detonation transition in narrow smooth-walled channels. Two agencies contributing to the transition are discussed: hydraulic resistance and flame folding. Depending on the kinetics and parameters of the system, nucleation of detonation may occur near the channel wall and/or in the channel interior. A possibly unexpected outcome of the resistance-folding interplay is the non-monotonicity of the dependence bet… Show more

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Cited by 9 publications
(3 citation statements)
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“…In the current study, multicomponent Navier-Stokes equations with detailed hydrogen chemistry and species transport models are used. The flame wrinkling was adopted from [14,16]. In physical units the set of governing equations reads then as follows (see also [41,42]…”
Section: Mathematical Modelmentioning
confidence: 99%
See 1 more Smart Citation
“…In the current study, multicomponent Navier-Stokes equations with detailed hydrogen chemistry and species transport models are used. The flame wrinkling was adopted from [14,16]. In physical units the set of governing equations reads then as follows (see also [41,42]…”
Section: Mathematical Modelmentioning
confidence: 99%
“…Keeping this in mind and also remembering that the DDT is a localized phenomenon motivate us to implement and to study the 1D Σ-model introduced in [10] and extensively studied in later works [14][15][16]. Within this approach the complex phenomenon of flame wrinkling can be still described with 1D formulation using flame folding factor Σ which represents the ratio of the total area of the wrinkled front to the area associated with its average radius.…”
Section: Introductionmentioning
confidence: 99%
“…The importance of gas compressibility appears with practical interest in the wide variety of combustion phenomena: for example, inside tubes [26,27], in the context of laser ablation [28,29] or in the process of thermonuclear explosions in the universe [30,31]. Inside tubes, the effects of wall friction and thermal expansion are important to understand the acceleration of a flame front [32,33].…”
Section: Introductionmentioning
confidence: 99%