Detonation of a mixture of RDX particles partially filling a cylindrical channel

Ждан, С. А.; Prokhorov, E. S.

doi:10.1007/bf02674475

Cited by 5 publications

(3 citation statements)

References 4 publications

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“…Zhdan and Prokhorov [28] allowed spreading of the reaction zone through the convective mechanism a detonation mode with a vortex structure of the reaction zone was obtained numerically with decreasing initial air pressure. These experiments showed that, in such systems, the beginning of the reaction zone in the DW is located at a considerable distance from the shock front (λ 1 ≈0.15-1.2 m).…”

Section: Detonation Wave In the Explosive Aerosuspensionmentioning

confidence: 92%

“…After the publication of [6,7], the problem of DW propagation in the aerosuspension of unitary fuel particles was solved in [25][26][27][28] in the framework of the ZND model with ignition through the shock-wave mechanism. Zhdan and Prokhorov [28] allowed spreading of the reaction zone through the convective mechanism a detonation mode with a vortex structure of the reaction zone was obtained numerically with decreasing initial air pressure.…”

Section: Detonation Wave In the Explosive Aerosuspensionmentioning

confidence: 99%

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Effect of initial air pressure on the detonation activity of an explosive aerosuspension

Pinaev

2014

Combust Explos Shock Waves

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The effect of air pressure (0.01-0.3 MPa) on the detonatability of an aerosuspension of secondary explosive particles at a low mean volume density of the explosive (0.14-1.28 mg/cm 3 ) is experimentally studied. The structure and basic parameters of detonation depending on the explosive density and initial gas pressure are determined, and the mechanism of low-velocity detonation propagation in explosive aerosuspensions is revealed. The lower concentration limits of detonation at different initial gas pressures are found.

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Section: Detonation Wave In the Explosive Aerosuspensionmentioning

confidence: 92%

Section: Detonation Wave In the Explosive Aerosuspensionmentioning

confidence: 99%

Effect of initial air pressure on the detonation activity of an explosive aerosuspension

Pinaev

2014

Combust Explos Shock Waves

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“…Equations (4) take into account the drag force of the particle in the gas flow [12] and the stagnation temperature of the flow in the boundary layer on the particle surface T f under velocity nonequilibrium [13]. The temperature dependence of the thermal conductivity of the gas λ 1 (T ) = λ 1 (300)(T /300) 0.5 is also taken into account.…”

Section: Consistent Physicomathematical Model Of Ignition and Detonatmentioning

confidence: 99%

Mathematical simulation of heterogeneous detonation of coal dust in oxygen with allowance for the ignition stage

Федоров

Khmel

2005

Combust Explos Shock Waves

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A consistent physicomathematical model that describes ignition and detonation combustion of a gas suspension of coal-dust particles is developed. The model is based on the concepts of the two-velocity two-temperature continuum of mechanics of heterogeneous media with allowance for reduced reactions of pyrolysis, combustion of volatiles, and combustion of the coke residue. The model is verified with the use of available experimental data on the dependence of the detonation velocity on the initial concentration of the discrete phase and the dependence of the ignition delay on the Mach number of the incident shock wave. An analysis of ignition of the gas suspension of bituminous coal in shock waves shows that the stage of ignition proceeds under conditions of both temperature and velocity nonequilibrium. The influence of particle heating due to stagnation temperature on devolatilization dynamics and ignition delay is established. Examples of computed flow structures behind shock and detonation waves with allowance for the ignition stage are presented.

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Clusterization of particles in turbulent and vortex two-phase flows

Varaksin

2014

High Temp

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Detonation of a mixture of RDX particles partially filling a cylindrical channel

Cited by 5 publications

References 4 publications

Effect of initial air pressure on the detonation activity of an explosive aerosuspension

Effect of initial air pressure on the detonation activity of an explosive aerosuspension

Mathematical simulation of heterogeneous detonation of coal dust in oxygen with allowance for the ignition stage

Clusterization of particles in turbulent and vortex two-phase flows

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