Detonation re-initiation in a concentric tube arrangement for C$$_2$$2H$$_2$$2/O$$_2$$2/Ar mixtures
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DOI: 10.1007/s00193-016-0698-0
Abstract: Re-initiation of detonation in a concentric tube arrangement where a detonation exiting from a small diameter inner tube to a large diameter outer tube has been investigated. The outer tube diameter D is 50.8 mm… read more here.
Keywords: concentric tube; initiation; tube; velocity ... See more keywords
A comparison of methods for detonation pressure measurement
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DOI: 10.1007/s00193-017-0761-5
Abstract: Detonation pressure is an important parameter describing the process of detonation. The paper compares three methods for determination of detonation pressure on the same explosive charge design. Pressed RDX/wax pellets with a density of $$1.66… read more here.
Keywords: comparison methods; methods detonation; detonation; detonation pressure ... See more keywords
Simulating the blast wave from detonation of a charge using a balloon of compressed air
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DOI: 10.1007/s00193-017-0774-0
Abstract: This paper investigates a simple numerical method, based on the release of a pressurized spherical air volume, to predict or reproduce the main characteristics of the blast environment from the detonation of solid or gaseous… read more here.
Keywords: air; detonation; balloon; simulating blast ... See more keywords
Experimental study of detonation of large-scale powder–droplet–vapor mixtures
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DOI: 10.1007/s00193-017-0795-8
Abstract: Large-scale experiments were carried out to investigate the detonation performance of a 1600-$$\hbox {m}^{3}$$m3 ternary cloud consisting of aluminum powder, fuel droplets, and vapor, which were dispersed by a central explosive in a cylindrically stratified… read more here.
Keywords: large scale; experimental study; charge; powder ... See more keywords
On the deflagration-to-detonation transition (DDT) process with added energetic solid particles for pulse detonation engines (PDE)
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DOI: 10.1007/s00193-017-0800-2
Abstract: In this paper, numerical simulations are performed to study the dynamics of the deflagration-to-detonation transition (DDT) in pulse detonation engines (PDE) using energetic aluminum particles. The DDT process and detonation wave propagation toward the unburnt… read more here.
Keywords: ddt process; detonation; aluminum particles;
Analysis of mixing in high-explosive fireballs using small-scale pressurised spheres
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DOI: 10.1007/s00193-018-0814-4
Abstract: After the detonation of an oxygen-deficient homogeneous high explosive, a phase of turbulent combustion, called afterburning, takes place at the interface between the rich detonation products and air. Its modelling is instrumental for the accurate… read more here.
Keywords: analysis mixing; detonation; mixing high; high explosive ... See more keywords
On the response of annular injectors to rotating detonation waves
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DOI: 10.1007/s00193-019-00900-8
Abstract: A series of three-dimensional, unsteady simulations have been conducted to illuminate the behavior of annular gaseous injectors that are frequently used in rotating detonation engine combustors. The strength (detonation overpressure history) and number of detonation… read more here.
Keywords: rotating detonation; waves response; detonation; detonation waves ... See more keywords
Analysis of the goodness of empirical approaches in predicting explosive detonation parameters
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DOI: 10.1007/s00477-018-1589-y
Abstract: Goodness of empirical models for predicting explosive detonation velocity and pressure was analysed using 3 databases consisting of experimental velocity and pressure measurements for different explosives. The first database was used to estimate experimental errors… read more here.
Keywords: explosive detonation; predicting explosive; model; detonation ... See more keywords
Computational study of the structure and properties of bicyclo[3.1.1]heptane derivatives for new high-energy density compounds with low impact sensitivity
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DOI: 10.1007/s00894-017-3540-4
Abstract: AbstractTo design new high-energy density compounds (HEDCs), a series of new bicyclo[2.2.1]heptane derivatives containing an aza nitrogen atom and nitro substituent were designed and studied theoretically. The density, heat of sublimation and impact sensitivity were… read more here.
Keywords: high energy; impact; density; detonation ... See more keywords
Theoretical calculation into the effect of molar ratio on the structures, stability, mechanical properties and detonation performance of 1,3,5,7-tetranitro-1,3,5,7-tetrazocane/ 1,3,5-trinitro-1,3,5-triazacyco-hexane cocrystal
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DOI: 10.1007/s00894-019-4181-6
Abstract: Molecular dynamics (MD) simulation was conducted to research the effect of molar ratio on the thermal stability, mechanical properties, and detonation performance of HMX (1,3,5,7-tetranitro-1,3,5,7-tetrazocane)/RDX (1,3,5-trinitro-1,3,5-triazacyco-hexane) cocrystal explosive at ambient condition. The binding energy, mechanical… read more here.
Keywords: molar ratio; rdx; ratio; mechanical properties ... See more keywords
Thermal stability and detonation character of nitro-substituted derivatives of imidazole
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DOI: 10.1007/s00894-019-4190-5
Abstract: A series of nitro-imidazole derivatives were designed by replacing hydrogen atoms on imidazole ring with nitro group one by one. In order to investigate the thermodynamic stability, heat of formation (HOF), and bond dissociation energy… read more here.
Keywords: detonation character; detonation; stability detonation; character nitro ... See more keywords