Transfer of a gas detonation through an inert gas ?plug?

Gavrilenko, T. P.; Krasnov, A. N.; Nikolaev, Yu. A.

doi:10.1007/bf00789625

Cited by 8 publications

(5 citation statements)

References 7 publications

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“…Pressure transducer records showed a build-up of pressure and then the onset of a detonation immediately behind the transmitted shock. Gavrilenko et al [5] and Teodorczyk et al [6] have also performed similar experiments with slight variations in introducing an inert layer. Gavrilenko et al [5] used rubber membranes to separate the reactive and inert gases, which were punctured prior to the experiment; whereas Teodorczyk et al [6] injected an inert gas into a channel filled with a reactive gas.…”

Section: Introductionmentioning

confidence: 90%

Transmission of a detonation wave across an inert layer

Tang-Yuk

Lee

et al. 2022

Combustion and Flame

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Section: Introductionmentioning

confidence: 90%

Transmission of a detonation wave across an inert layer

Tang-Yuk

Lee

et al. 2022

Combustion and Flame

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“…2016, 2018; Ma, Wang & Han 2020) to the detonation propagation direction, respectively. Figures 1( c ) and 1( d ) depict reactants with inert layers parallel (Houim & Fievisohn 2017; Reynaud, Virot & Chinnayya 2017; Maxwell & Melguizo-Gavilanes 2019; Taileb, Melguizo-Gavilanes & Chinnayya 2019) and normal (Gavrilenko, Krasnov & Nikolaev 1982; Bjerketvedt, Sonju & Moen 1986; Teodorczyk & Benoan 1996; Kuznetsov et al. 1997; Li et al.…”

Section: Introductionmentioning

confidence: 99%

“…Figures 1(a) and 1(b) show reactants with fuel concentration gradient normal (Ishii & Kojima 2007;Lieberman & Shepherd 2007a,b;Kessler, Gamezo & Oran 2012;Ettner, Vollmer & Sattelmayer 2013;Boeck et al 2015;Grune et al 2017;Khodadadi Azadboni et al 2019;Zheng et al 2019) and parallel (Thomas, Sutton & Edwards 1991;Kuznetsov et al 1998;Boulal et al 2016Boulal et al , 2018Ma, Wang & Han 2020) to the detonation propagation direction, respectively. Figures 1(c) and 1(d) depict reactants with inert layers parallel (Houim & Fievisohn 2017;Reynaud, Virot & Chinnayya 2017;Maxwell & Melguizo-Gavilanes 2019;Taileb, Melguizo-Gavilanes & Chinnayya 2019) and normal (Gavrilenko, Krasnov & Nikolaev 1982;Bjerketvedt, Sonju & Moen 1986;Teodorczyk & Benoan 1996;Kuznetsov et al 1997;Li et al 2008;Fujii et al 2017;Ishii & Seki 2017;Peace & Lu 2017;Tang et al 2017;Peace & Lu 2018;Tang et al 2018;Chen, Liu & Wang 2019;Tang et al 2019a,b) to the detonation propagation direction, respectively. Similar to the case in figure 1(d), several studies (Kuznetsov et al 1997;Li et al 2008;Peace & Lu 2017;Tang et al 2017;…”

Section: Introductionmentioning

confidence: 99%

Numerical studies on detonation propagation in inhomogeneous mixtures with periodic reactant concentration gradient

et al. 2023

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In detonation engines and accidental explosions, a detonation may propagate in an inhomogeneous mixture with non-uniform reactant concentration. In this study, one- and two-dimensional simulations are conducted for detonation propagation in hydrogen/oxygen/nitrogen mixtures with periodic sinusoidal or square wave distribution of the reactant concentration. The objective is to assess the properties of detonation propagation in such inhomogeneous mixtures. Specifically, detonation quenching and reinitiation, cellular structure, cell size and detonation speed deficit are investigated. It is found that there exists a critical amplitude of the periodic mixture composition distribution, above which the detonation quenches. When the amplitude is below the critical value, detonation quenching and reinitiation occur alternately. A double cellular structure consisting of substructures and a large-scale structure is found for a two-dimensional detonation propagating in inhomogeneous mixtures with a periodic reactant concentration gradient. The detonation reinitiation process and the formation of the double cellular structure are interpreted. To quantify the properties of detonation propagation in different inhomogeneous mixtures, the large cell size, critical amplitude, transition distance and detonation speed deficit are compared for hydrogen/air without and with nitrogen dilution and for periodic sine wave and square wave distributions of the reactant concentration. The large-scale cell size is found to be linearly proportional to the wavelength, and both the critical amplitude and the transition distance decrease with the wavelength. The small detonation speed deficit is shown to be due to the incomplete combustion of the reactant. This work provides helpful understanding of the features of detonation propagation in inhomogeneous mixtures.

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“…Experimental efforts were made, particularly in the 1980s-90s, to examine the transmission of gaseous detonations across an inert layer [2][3][4][5][6] . However, obtaining a reproducible inert layer with abrupt boundaries is difficult in practice.…”

Section: Introductionmentioning

confidence: 99%