Simulating the blast wave from detonation of a charge using a balloon of compressed air

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 charges. This approach aims to give an alternative to the use of a steady-s...

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Bibliographic Details
Published in:Shock waves 2018, Vol.28 (4), p.641-652
Main Authors: Blanc, L., Santana Herrera, S., Hanus, J. L.
Format: Article
Language:English
Subjects:
Acoustics
Compressed air
Computer simulation
Condensed Matter Physics
Detonation
Engineering
Engineering Fluid Dynamics
Engineering Thermodynamics
Environmental Engineering
Environmental Sciences
Equations of state
Equivalence
Explosions
Fluid- and Aerodynamics
Heat and Mass Transfer
Mathematical models
Numerical methods
Original Article
Overpressure
Steady state models
Thermodynamics
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Summary: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 charges. This approach aims to give an alternative to the use of a steady-state detonation model and a Jones–Wilkins–Lee equation of state to describe the expansion of the detonation products, especially when the explosive parameters are unknown and a TNT equivalent is used. The validity of the proposed approach is assessed through the comparison of predicted overpressure and impulse at different distances from the explosion with that of TNT and stoichiometric propane–oxygen explosions. It is also shown that, for gaseous detonations, a better agreement is obtained with the rationally optimized compressed balloon than with the use of a Jones–Wilkins–Lee model and a TNT equivalent mass.
ISSN:0938-1287
1432-2153
DOI:10.1007/s00193-017-0774-0