Effects of initial temperature on gas-detonation parameters

Васильев, А. А.; Topchiyan, M. E.; Ul’yanitskii, V. Yu.

doi:10.1007/bf00739878

Cited by 8 publications

(6 citation statements)

References 3 publications

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“…According to the results obtained in [8,9] the detonation velocity at pressure P 0 up to 10 MPa has a weak dependence on the initial temperature. As this takes place, the growth of the initial temperature leads to a noticeable decrease in the relative pressure rise P 2 /P 0 and the Mach number M. The temperature, pressure and composition of the combustion products of hydrogenous mixtures can be assessed using the ideal gas equation of state up to P 0 50 MPa.…”

Section: Reflected Detonation Wave Parametersmentioning

confidence: 68%

Regimes of Supersonic Combustion: Detonation Waves

Gel’fand

Silnikov²,

Medvedev

et al. 2011

Shock Wave and High Pressure Phenomena

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Section: Reflected Detonation Wave Parametersmentioning

confidence: 68%

Regimes of Supersonic Combustion: Detonation Waves

Gel’fand

Silnikov²,

Medvedev

et al. 2011

Shock Wave and High Pressure Phenomena

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“…The losses due to friction and heat transfer to the tube walls are ignored. The latter is caused by the fact that the Vasil'ev-Nikolaev model for calculating the detonationcell size [8,[37][38][39], which is used below, involves the wave parameters without losses on the walls.…”

Section: Detonation-wave Parameters and Cell Size In Gas Mixtures Witmentioning

confidence: 99%

“…According to the model developed in [8,[37][38][39], the longitudinal size of the gas-detonation cell b p depends on the wave velocity and gas parameters (pressure and temperature) behind the leading shock front as…”

Section: Detonation-wave Parameters and Cell Size In Gas Mixtures Witmentioning

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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“…It is difficult to explain such a behavior of transverse waves from the viewpoint of the classical detonation theory [12], where the detonation velocity is fairly definite and depends far from the detonation limits only on the physical and chemical parameters of the mixture; the detonation velocity in the gas mixture depends only weakly on the initial temperature, pressure, and density [13,14]. Hence, the process of TDW propagation in a moving and gradually mixing flow of the components is more complicated, because it involves additional physical factors in the form of nonuniform distributions of parameters of the mixture ahead of the TDW front over its height (φ, P , ρ, T , velocity v z , cross-sectional area of the mixture S c1 , etc.…”

Section: Detonation With Exhaustion Of the Products Into An Evacuatedmentioning

confidence: 99%

Continuous spin detonation of hydrogen-oxygen mixtures. 2. Combustor with an expanding annular channel

Быковский

Ждан

Ведерников

2008

Combust Explos Shock Waves

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A comprehensive numerical and experimental study of continuous spin detonation of a hydrogen-oxygen mixture in an annular combustor with the components supplied through injectors is performed. The hydrogen-oxygen mixture is burned in the regime of continuous spin detonation in an annular combustor 4 cm in diameter with subsequent channel expansion. The flow structure is considered for varied flow rates of the components of the mixture and the counterpressure of the ambient medium. The dynamics of the transverse detonation wave is numerically studied in a two-dimensional unsteady gas-dynamic statement of the problem with the geometric parameters of the combustor consistent with experimental ones. Reasonable agreement with experiments is reached in terms of the shape of detonation fronts, detonation velocity, and height of the wave front. The optimal point of channel expansion beginning is chosen, which ensures the maximum specific impulse in the spin detonation regime.

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Effects of initial temperature on gas-detonation parameters

Cited by 8 publications

References 3 publications

Regimes of Supersonic Combustion: Detonation Waves

Regimes of Supersonic Combustion: Detonation Waves

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

Continuous spin detonation of hydrogen-oxygen mixtures. 2. Combustor with an expanding annular channel

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