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Modeling the shock-induced multiple reactions in a random bed of metallic granules in an energetic material

Kim, Bohoon and Choi, Sanghun and Yoh, Jack J. (2019) Modeling the shock-induced multiple reactions in a random bed of metallic granules in an energetic material. Combustion and Flame, 210 . pp. 54-70. ISSN 0010-2180.

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An investigation of shock–particle interactions in reactive flows is performed using an Eulerian hydrodynamic method with a hybrid particle level-set algorithm to handle the material interface dynamics. The analysis is focused on the meso- to macro-scale numerical modeling of a granular metalized explosive containing randomly distributed metal particles intended to enhance its blast effect. The reactive flow model is used for the cyclotrimethylene-trinitramine (RDX) component, while thermally induced deflagration kinetics describes the aerobic reaction of the metal particles. The complex interfacial algorithm, which uses aligned level sets to track deforming surface between multi materials and to generate the random shape of granule elements, is described for aluminized and copperized RDX. Then, the shock-induced collapse of metal particles embedded in the condensed phase domain of a high explosive is simulated. Both aluminized and copperized RDX are shown to detonate with a shock wave followed by the burning of the metal particles. The energy release and the afterburning behavior behind the detonating shock wave successfully identified the precursor that gave rise to the development of deflagration of the metal particles.

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Additional Information:© 2019 The Combustion Institute. Published by Elsevier Inc. Under a Creative Commons license -- Attribution 4.0 International (CC BY 4.0) Received 11 February 2019, Revised 16 August 2019, Accepted 16 August 2019, Available online 28 August 2019. This work was supported by the Agency for Defense Development through IAAT at Seoul National University. Additional funding came from the Advanced Research Center (NRF-2013R1A5A1073861) contracted through the Next Generation Space Propulsion Research Center and Research Fellow (NRF-2017R1A6A3A11031277) at Seoul National University.
Funding AgencyGrant Number
Seoul National UniversityUNSPECIFIED
National Research Foundation of Korea2013R1A5A1073861
National Research Foundation of Korea2017R1A6A3A11031277
Subject Keywords:Afterburning; Blast enhancement; Metalized explosives; Random bed of metallic granules; Shock–particle interaction
Record Number:CaltechAUTHORS:20190828-092701143
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Official Citation:Bohoon Kim, Sanghun Choi, Jack J. Yoh, Modeling the shock-induced multiple reactions in a random bed of metallic granules in an energetic material, Combustion and Flame, Volume 210, 2019, Pages 54-70, ISSN 0010-2180, (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:98288
Deposited By: Tony Diaz
Deposited On:28 Aug 2019 16:38
Last Modified:27 Nov 2019 16:54

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