Two-phase flow behind a shock wave with phase transitions and chemical reactions

Смирнов, Н. Н.; Zverev, N. I.; Tyurnikov, Michael V.

doi:10.1016/0894-1777(95)00171-9

Cited by 9 publications

(12 citation statements)

References 6 publications

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“…Consequently, the detonation wave speed is expected to drop as φ s,0 increases. On the other hand, examination of (10) and (11) shows that both F and Q are proportional to d −2 p . Therefore, lower particle diameters, under constant φ s,0 , result in larger surface area of particles and, therefore, higher momentum and energy transfer from the gas to the particles.…”

Section: A Parametric Study On the Effect Of φ S0 And D Pmentioning

confidence: 96%

“…These studies suggested that very small particle diameters or sufficiently high particle concentrations can result in detonation failure (quenching) due to increased energy and momentum transfer from the gas to the particles. Also, Smirnov et al [11] examined both computationally and experimentally the initiation of detonations by a shock wave that propagates through a mixture of gas and particles. In that article, flows with both inert and reactive particles are examined.…”

Section: Introductionmentioning

confidence: 99%

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Influence of inert particles on the propagation of multidimensional detonation waves

Papalexandris

2005

Combustion and Flame

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Section: A Parametric Study On the Effect Of φ S0 And D Pmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Influence of inert particles on the propagation of multidimensional detonation waves

Papalexandris

2005

Combustion and Flame

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“…While more refined models for particle drag in high Mach number flow are available [11] the more simplified approach here has been shown to be adequate for application to detonation environments [9]. The first term on the right-hand side of Equation (3e) represents compression work and heat transfer.…”

Section: Particulate Phasementioning

confidence: 97%

“…Numerous studies have employed dusty gas approximations to examine the interaction of shocks. Examples include shocks interacting with inert [9], coal [10], aluminum [4], and hydrocarbon [11] particles and droplets. A recent review of the literature in this area applied to DDT is provided by Zhang [12].…”

Section: Introductionmentioning

confidence: 99%

“…In their formulation mesoscale models are devised using an entropy inequality in the context of rational thermodynamics [14]. Several authors have built upon these concepts to examine DDT of explosives [8,11,[15][16][17]. Bdzil et al provides a critical review of the BN model and associated studies related to DDT up through 1999 and suggest several improvements.…”

Section: Introductionmentioning

confidence: 99%

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Modeling of particle compressibility and ignition from shock focusing

Ruggirello

DesJardin

Baer

et al. 2010

Combustion Theory and Modelling

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Two-phase shock-driven reacting flow simulations are conducted to determine the postdetonation shock-focusing ignition and burning of aluminum particle mixtures. A model for aluminum particles that accounts for material compressibility from shock heating and expansion is presented. The Lagrangian description of the particles is incorporated into an Eulerian description of the gas phase resulting in a fully compressible, twoway coupled simulation. Simulations are conducted of an isolated explosive located near a corner to promote ignition of the particles from shock focusing. Parametric studies are conducted to determine the effects of equivalence ratio, particle size, and charge placement, on the post-detonation pressure and impulse. Results highlight the importance of the timing and position of the shock focusing event relative to the local mixture equivalence ratio that results in an optimal equivalence ratio which maximizes impulse for the geometry considered.

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A reaction progress variable modeling approach for non-ideal multiphase explosives

Ruggirello

DesJardin

Baer

et al. 2012

International Journal of Multiphase Flow

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This study concerns the development of a mixture fraction based reaction progress variable formulation for aluminized explosives. Highlights of the formulation include a fully compressible treatment of both the gas and solid phases (both aluminum and alumina), heterogenous and homogenous reactions, and effects of group combustion. Isolated particle simulations are validated against experimental data and DNS and show good agreement of burn times over a range of pressure and oxygen environments. The new models are implemented in the CTH shock physics code using a fractional step approach to allow for efficient computation of particle dynamics. Comparisons are made to experimental pressure data for a thermobaric explosive in the Sandia Explosive Components Facility (ECF). Parametric studies are conducted to determine pressure response and impulse to charge equivalence ratio and particle size. Overall good agreement is observed between simulation predictions of pressure time history and impulse.

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Two-phase flow behind a shock wave with phase transitions and chemical reactions

Cited by 9 publications

References 6 publications

Influence of inert particles on the propagation of multidimensional detonation waves

Influence of inert particles on the propagation of multidimensional detonation waves

Modeling of particle compressibility and ignition from shock focusing

A reaction progress variable modeling approach for non-ideal multiphase explosives

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