Detonation of the Gas Mixtures with Inert Solid Particles

Федоров, А. В.; Fomin, V. M.

doi:10.1007/978-94-011-5432-1_15

Cited by 6 publications

(7 citation statements)

References 6 publications

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“…Numerical calculations illustrating the proved postulates showed that a continuous transition of the detonation velocity from a certain value D e to a greater value D f is observed with increasing particle diameter and their fixed content ahead of the wave front. Kazakov et al [5] and Fedorov and Fomin [6] applied this mathematical model to describe the detonation of a hydrogen-air mixture and verified the model with the use of experimental data on the detonation velocity dependence on the volume fraction of particles [7]. Let us also note the paper of Wolanski et al [8] with results on detonation suppression in methane-air mixtures by adding SiC particles 450-3450 μm in diameter.…”

Section: Introductionmentioning

confidence: 90%

“…(4)- (6) and provided some numerical illustrations. For this purpose, we first obtained the eigenvalues of the system of equations determining the DW structure from the equation…”

Section: Detonation Wave Structurementioning

confidence: 99%

“…Thus, the mathematical models that can be used to describe the detonation phenomena in gas suspensions are restricted to the models of equilibrium [2,10] and model or reduced [3][4][5][6]9] kinetics of chemical transformations in the DW. Therefore, it seems of interest to develop a theoretical model of these phenomena, which could offer a detailed description of the DW structure and establish correspondence between the data obtained with detailed and reduced kinetics.…”

Section: Introductionmentioning

confidence: 99%

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Mathematical modeling of detonation suppression in a hydrogen-oxygen mixture by inert particles

Федоров

Тропин

Бедарев

2010

Combust Explos Shock Waves

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The paper addresses the problem of searching for methods that can control, suppress, and attenuate explosive and detonation processes in homogeneous and heterogeneous media (mixtures of reactive gases and inert species). The analysis is performed by analytical and numerical methods. The problem of detonation suppression in a mixture of reactive gases and inert species (argon and sand particles) in a one-dimensional unsteady flow is formulated, and its solution is given. The effect of the particle diameter and concentration on the detonation velocity is determined; the parameters of the detonation wave in a stoichiometric hydrogen-oxygen mixture diluted by a chemically inert gas (argon) and particles is determined. The influence of the initial parameters of the mixture on the possibility of detonation suppression by inert particles is studied. It is shown that the detonation velocity substantially decreases with increasing volume fraction of particles. A decrease in the particle size with an unchanged volume fraction is also found to reduce the detonation velocity.

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Section: Introductionmentioning

confidence: 90%

“…(4)- (6) and provided some numerical illustrations. For this purpose, we first obtained the eigenvalues of the system of equations determining the DW structure from the equation…”

Section: Detonation Wave Structurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Mathematical modeling of detonation suppression in a hydrogen-oxygen mixture by inert particles

Федоров

Тропин

Бедарев

2010

Combust Explos Shock Waves

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“…The dependence of the detonation velocity on the particle concentration was studied in [23,24]. The effect of the particle concentration and size on the wave parameters and suppression was considered in [1,4,22,[25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Effect of chemically inert particles on parameters and suppression of detonation in gases

Fomin

Chen

2009

Combust Explos Shock Waves

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An algorithm for calculating the parameters of a steady one-dimensional detonation wave in mixtures of a gas with chemically inert particles and estimating the detonation-cell size in such mixtures is proposed. The calculated detonation parameters and cell size in stoichiometric hydrogen-oxygen mixtures with W, Al 2 O 3 , and SiO 2 particles are used to analyze the method of suppression of multifront gas detonation by injecting chemically inert particles ahead of the leading wave front. The ratio between the channel diameter and the detonation-cell size is used to estimate the limit of heterogeneous detonation in the mixtures considered. The minimum mass of particles and the characteristic cloud size necessary for detonation suppression are calculated. The effect of thermodynamic parameters of particles on the detonation suppression process is analyzed for the first time. Particles with a high specific heat and (if melting occurs) a high phase-transition heat are found to exert the most pronounced effect.

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“…The influence of the size and concentration of particles on the parameters and suppression of the wave has been investigated in [5][6][7][24][25][26][27][28][29][30][31][32]. The influence of the density of the particle material on the parameters and quenching of the wave has been calculated in [7].…”

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confidence: 99%

Physicomathematical modeling of suppression of gaseous detonation by chemically inert particles

Федоров

Fomin

Тропин

et al. 2012

J Eng Phys Thermophy

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UDC 534.222A model for describing the propagation of a stationary detonation wave in a mixture of a gas with chemically inert particles has been proposed, and calculations of its structure have been carried out. The dynamics of interaction of the detonation wave with the cloud of chemically inert particles has been investigated. Cloud parameters ensuring successful suppression of detonation have been determined.

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Detonation of the Gas Mixtures with Inert Solid Particles

Cited by 6 publications

References 6 publications

Mathematical modeling of detonation suppression in a hydrogen-oxygen mixture by inert particles

Mathematical modeling of detonation suppression in a hydrogen-oxygen mixture by inert particles

Effect of chemically inert particles on parameters and suppression of detonation in gases

Physicomathematical modeling of suppression of gaseous detonation by chemically inert particles

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