Experimental investigation and numerical validation of explosion suppression by inert particles in large-scale duct

Dong, Gang; Fan, Baochun; Bo, Xie; Ye, Jingfang

doi:10.1016/j.proci.2004.07.046

Cited by 43 publications

(22 citation statements)

References 9 publications

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“…These results are qualitatively in agreement with those found by Dong et al [16]. The similarity between the particle cloud length and volume fraction simulation is to be expected, because the same number of particles is used in both cases.…”

Section: Volume Fractionsupporting

confidence: 92%

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CFD Simulation of Particles Effects on Characteristics of Detonation

Shafiee¹,

Djavareshkian²

2014

IJCTE

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Abstract-This paper covers the topic of the interaction process between a detonation wave and a cloud of inert particles. A computer code based on numerical method on Flux Corrected Transport algorithm was developed to solve the Euler equations for inviscid flow. The chemical reaction is modeled with one-step Arrhenius chemistry, and the particle phase is modeled in Lagrangian frame of reference. Simulation results illustrate that detonation wave could be suppressed by a cloud of inert particle, if the cloud parameters meet some critical conditions.

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Section: Volume Fractionsupporting

confidence: 92%

“…In the experiments carried out by Dong et al [16], some quantitative difference occurred between experiments and calculations. There is an urgent need for experimental investigation, in order to validate simulation of detonation suppression.…”

Section: Discussionmentioning

confidence: 96%

CFD Simulation of Particles Effects on Characteristics of Detonation

Shafiee¹,

Djavareshkian²

2014

IJCTE

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“…The value of p 0 was varied from 0.01 to 0.1 MPa. The detonation in the initiation section was initiated by a high-voltage spark from the high-voltage source (5).…”

Section: Methodsmentioning

confidence: 99%

“…The basic mechanism of decay of explosive waves in a dust cloud is the loss of thermal and kinetic energy from the gas flow to the solid particles. The process of decay of a gas detonation in a dust-laden gas medium was studied experimentally and theoretically (see, e.g., [1][2][3][4][5][6]). Available publications were analyzed in [6], where various mathematical models of detonation suppression in reacting gas mixtures by clouds of fine particles were presented.…”

Section: Introductionmentioning

confidence: 99%

Suppression of gas detonation by a dust cloud at reduced mixture pressures

2014

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The decay of a detonation wave in a CH 4 +2O 2 + N 2 mixture propagating through a dust cloud is experimentally studied for three types of silica sand with particle sizes δ = 250-600, 120-250, and 90-120 µm, mean volume densities ρ s = 2.2-3.5 g/l, and initial pressure p 0 = 0.1-0.01 MPa. A non-monotonic character of reduction of wave velocity in the dust cloud is observed, where a secondary detonation can arise behind the leading front of the wave in the course of its attenuation. This situation is induced by the dual role of sand particles in decelerating the flow and simultaneously generating hot spots that promote reaction excitation. As a result, the mechanism of ignition in the decaying detonation wave becomes different. Critical parameters of the dust cloud providing complete suppression of the detonation wave and the flame propagating behind the latter at a reduced initial pressure of the gas mixture are determined.

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“…The influence of inert particles on the detonation wave velocity, initiation energy, and detonation limits was described in [4][5][6]. The effect of the volume fraction of the dust cloud and the particle size on detonation quenching was studied in [7,8].…”

Section: Introductionmentioning

confidence: 99%

Analysis of the influence of inert particles on the propagation of a cellular heterogeneous detonation

Федоров

Kratova

2015

Shock Waves

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The interaction of a cellular detonation wave with a cloud of inert particles is investigated numerically. The regimes of propagation of the heterogeneous cellular detonation and its suppression are identified. The influence of various parameters of the inert cloud is demonstrated. The critical length of the cloud for detonation suppression is determined. It is shown that the disperse composition and the non-uniform distribution of particles of the particle cloud are important parameters affecting the detonation propagation mode.

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Experimental investigation and numerical validation of explosion suppression by inert particles in large-scale duct

Cited by 43 publications

References 9 publications

CFD Simulation of Particles Effects on Characteristics of Detonation

CFD Simulation of Particles Effects on Characteristics of Detonation

Suppression of gas detonation by a dust cloud at reduced mixture pressures

Analysis of the influence of inert particles on the propagation of a cellular heterogeneous detonation

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