JWL++: A Simple Reactive Flow Code Package for Detonation

Souers, P. C.; Anderson, Steve; Mercer, James W.; McGuire, E M; Vitello, P.

doi:10.1002/(sici)1521-4087(200004)25:2<54::aid-prep54>3.0.co;2-3

Cited by 69 publications

(38 citation statements)

References 4 publications

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“…The detonation model used in two of the calculations discussed in Section 5 is a reactive flow model known as JWL++ [19]. JWL++ consists of equations of state for the reactant and the products of reaction as well as a rate equation governing the transformation from product to reactant.…”

Section: The Jwl++ Detonation Modelmentioning

confidence: 99%

“…The size effect refers to the change of the steady state detonation velocity of explosives, U s with size R 0 [19]. In order to validate our implementation of the JWL++ detonation model within our multi-material framework, a parameter study was conducted for cylinders of Ammonium Nitrate Fuel Oil (ANFO-K1) with length of 10 cm and radii ranging from 4 mm to 20 mm.…”

Section: Rate Stick Simulationsmentioning

confidence: 99%

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An Eulerian–Lagrangian approach for simulating explosions of energetic devices

Guilkey

Harman

Banerjee

2007

Computers & Structures

107

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An approach for the simulation of explosions of "energetic devices" is described. In this context, an energetic device is a metal container filled with a high explosive (HE). Examples include bombs, mines, rocket motors or containers used in storage and transport of HE material. Explosions may occur due to detonation or deflagration of the HE material, with initiation resulting from either mechanical or thermal insult. This approach is applicable to a wide range of fluid-structure interaction scenarios, the application to energetic devices is chosen because it demonstrates the full capability of this methodology.Simulations of this type are characterized by a number of interesting and challenging behaviors. These include the transformation of the solid HE into highly pressurized gaseous products that initially occupy regions which formerly contained only solid material. This rapid pressurization of the container leads to large deformations at high strain rates and its eventual case rupture. Once the container breaks apart, the highly pressurized product gas that escapes the failing container generates shock waves that propagate through the initially quiescent surrounding fluid.The approach, which uses a finite-volume, multi-material compressible CFD formulation, within which solid materials are represented using a particle method known as the Material Point Method, is described, including certain of the sub-grid models required to close the governing equations. Results are first presented for "rate stick" and "cylinder test" scenarios, each of which involves detonating unconfined and confined HE material, respectively. Experimental data are available for these configurations and as such they serve as validation tests. Finally, results from an unvalidated "fast cook-off" simulation in which the HE is initiated by thermal input, which leads to a deflagration type of reaction, are shown.

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Section: The Jwl++ Detonation Modelmentioning

confidence: 99%

Section: Rate Stick Simulationsmentioning

confidence: 99%

An Eulerian–Lagrangian approach for simulating explosions of energetic devices

Guilkey

Harman

Banerjee

2007

Computers & Structures

107

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“…As for modelling the chemical response of energetic materials under an impact loading, Lee-Tarver [11] or JWL++ (Jones-Wilkins-Lee++) [12] type approaches have been considered in general. Lee-Tarver considers generation of hotspots and their effect during initiation.…”

Section: Introductionmentioning

confidence: 99%

Characterization of aluminized RDX for chemical propulsion

Yoh

Kim²,

Kim³

et al. 2015

International Journal of Aeronautical and Space Sciences

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The chemical response of energetic materials is analyzed in terms of 1) the thermal decomposition under the thermal stimulus and 2) the reactive flow upon the mechanical impact, both of which give rise to an exothermic thermal runaway or an explosion. The present study aims at building a set of chemical kinetics that can precisely model both thermal and impact initiation of a heavily aluminized cyclotrimethylene-trinitramine (RDX) which contains 35% of aluminum. For a thermal decomposition model, the differential scanning calorimetry (DSC) measurement is used together with the Friedman isoconversional method for defining the frequency factor and activation energy in the form of Arrhenius rate law that are extracted from the evolution of product mass fraction. As for modelling the impact response, a series of unconfined rate stick data are used to construct the size effect curve which represents the relationship between detonation velocity and inverse radius of the sample. For validation of the modeled results, a cook-off test and a pressure chamber test are used to compare the predicted chemical response of the aluminized RDX that is either thermally or mechanically loaded.

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“…As for modelling the chemical response of energetic materials under an impact loading, Lee and Tarver [11] or JWL++ (Jones-Wilkins-Lee++) [12] type approaches have been considered in general. Lee-Tarver considers the generation of hotspots and their effect during initiation.…”

Section: Introductionmentioning

confidence: 99%

Characterization of heavily aluminized energetic material for explosive testing and chemical modelling

Yoh¹,

Kim²,

Kim³

et al. 2015

Materials Characterisation VII

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The chemical response of energetic materials is analysed in terms of 1) the thermal decomposition under thermal stimulus and 2) the reactive flow upon the mechanical impact, both of which give rise to an exothermic thermal runaway or an explosion. The present study aims at building a set of chemical kinetics that can precisely model both thermal and impact initiation of a heavily aluminized cyclotrimethylene-trinitramine (RDX) which contains 35% of aluminium. For a thermal decomposition model, the differential scanning calorimetry (DSC) measurement is used together with the Friedman isoconversional method for defining the frequency factor and activation energy in the form of Arrhenius rate law that are extracted from the evolution of product mass fraction. As for modelling the impact response, a series of unconfined rate stick data are used to construct the size effect curve which represents the relationship between detonation velocity and inverse radius of the sample. For validation of the modelled results, a cook-off test and a pressure chamber test are used to compare the predicted chemical response of the aluminized RDX that is either thermally or mechanically loaded.

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JWL++: A Simple Reactive Flow Code Package for Detonation

Cited by 69 publications

References 4 publications

An Eulerian–Lagrangian approach for simulating explosions of energetic devices

An Eulerian–Lagrangian approach for simulating explosions of energetic devices

Characterization of aluminized RDX for chemical propulsion

Characterization of heavily aluminized energetic material for explosive testing and chemical modelling

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