A simple blast wave model for bursting spheres based on numerical simulation

Vanderstraeten, B; Lefebvre, M. H.; Berghmans, Jan

doi:10.1016/0304-3894(95)00066-6

Cited by 14 publications

(9 citation statements)

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“…In these figures, the peaks located at 0.64 ms represent the reflected shock waves resulting from Wall 1. In this report, the positive overpressure peak located between 0.54 ms and 0.56 ms will be assimilated to the second shock wave resulting from the detonation of a spherical gaseous charge [5].…”

Section: Experiments With Two Wallsmentioning

confidence: 99%

“…28 represent the reflections resulting from Walls 4 and 2, respectively. The peak located at 0.81 ms is the result of the reflection of the second incident shock wave [5] on Wall 4. This peak appears in Fig.…”

Section: Experiments With Two Wallsmentioning

confidence: 99%

“…This peak is visible in each figure; therefore, the corresponding shock wave cannot result from a wall reflection. Vanderstraeten et al [5] highlighted that this peak appears during the detonation of a spherical (or hemispherical) gaseous charge. They demonstrated that in this case, the incident shock wave is immediately followed by a second shock wave whose amplitude is smaller.…”

Section: Experiments With One Wallmentioning

confidence: 99%

“…23, the peak located at 0.62 ms corresponds to the reflected overpressure peak due to the reflection of the incident shock wave on Wall 4. However, a second overpressure peak located at 0.82 ms appears and can be assumed to be the result of the reflection on Wall 4 of the second shock wave from the detonation of a spherical gaseous charge [5].…”

Section: Experiments With One Wallmentioning

confidence: 99%

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Analysis of reflected blast wave pressure profiles in a confined room

2012

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International audienceTo understand the blast effects of confined explosions, it is necessary to study the characteristic parameters of the blast wave in terms of overpressure, impulse and arrival time. In a previous study, experiments were performed using two different scales of a pyrotechnic workshop. The main purpose of these experiments was to compare the TNT equivalent for solid and gaseous explosives in terms of mass to define a TNT equivalent in a reflection field and to validate the similitude between real and small scales. To study the interactions and propagations of the reflected shock waves, the present study was conducted by progressively building a confined volume around the charge. In this way, the influence of each wall and the origins of the reflected shock waves can be determined. The purpose of this paper is to report the blast wave interactions that resulted from the detonation of a stoichiometric propane-oxygen mixture in a confined room

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Section: Experiments With Two Wallsmentioning

confidence: 99%

Section: Experiments With Two Wallsmentioning

confidence: 99%

Section: Experiments With One Wallmentioning

confidence: 99%

Section: Experiments With One Wallmentioning

confidence: 99%

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Analysis of reflected blast wave pressure profiles in a confined room

2012

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“…In combustion explosions, the available quantity of energy changes rapidly and is constantly redistributed among heat, the kinetic and chemical energy forms [1,2]. The problem becomes even more complex when the subsequent blast wave propagation is assumed to interact with the nearby structures.…”

Section: Introductionmentioning

confidence: 99%

Prediction of blast wave effects on a developed site

Benselama

William-Louis

Monnoyer

2010

International Journal of Impact Engineering

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The guidelines for protecting against and mitigating explosion hazards require knowledge and either the experimental or theoretical evaluation of blast wave parameters. To this end, this article proposes a numerical method for simulating blast wave propagation in complex geometries. This method permits an on-the-ground TNT-like explosion and the subsequent blast wave to be simulated, with the possibility of modifying the ground topology by adding a number of obstacles. The numerical model is explored from both a qualitative and quantitative point of view by comparing it to experimental data, with a correct determination of the wave amplitude and phase signature at different key-positions. The pressure and Mach number distributions deduced from simulations in complex congested areas highlight various fluidsolid interactions, such as regular reflections and diffractions. The iso-damage diagrams of different obstacle layouts are also presented and discussed.Key words: Blast loading, Semi-confined environment, Iso-damage diagram, Finite volume method, Cartesian mesh PACS: 47.40. Rs, 62.20 .D- NomenclatureGreek Symbols ∆p overpressure, ∆p = p − p ref (P a) ∆x specific length of the current three-dimensional mesh cell γ heat capacity ratio of the perfect gas * Corresponding author.

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Blast Waves and Explosions Sound generation by explosive decompression of an airplane

Shepherd

Hornung

2005

Shock Waves

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A simple blast wave model for bursting spheres based on numerical simulation

Cited by 14 publications

References 1 publication

Analysis of reflected blast wave pressure profiles in a confined room

Analysis of reflected blast wave pressure profiles in a confined room

Prediction of blast wave effects on a developed site

Blast Waves and Explosions Sound generation by explosive decompression of an airplane

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