High-order numerical simulation and modelling of the interaction of energetic and inert materials

Authors: Stewart, D. Scott¹; Yoo, Sunhee¹; Wescott, B. L.²

Source: Combustion Theory and Modelling, Volume 11, Number 2, April 2007 , pp. 305-332(28)

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Abstract:

We present an integrated algorithm on a Eulerian grid, for multimaterial simulations of energetic and inert materials modelled by non-ideal equations of state. We employ high-resolution shock capturing numerical algorithms for each material inside its domain and use an overlap domain method across the interface, maintained by a recently developed, hybrid, level-set algorithm. For applications to condensed explosives we implement a non-ideal, wide-ranging equation of state and reaction rate law. For inert materials, like plastic, metal, water, etc., we implement a (linear in the pressure) Mie-Grüneisen, (Up-Us), equation of state. We present a series of verifications of the integrated multimaterial code and show validations against experiment. We show examples of simulations of various experiments associated with real or planned experiments, some of which contain energetic materials (specifically the condensed explosives PBX-9502 and PBX-9501).

Keywords: Multimaterial simulations; Energetic materials; Validation; Verification

Document Type: Research article

DOI: http://dx.doi.org/10.1080/13647830600876629

Affiliations: 1: Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 2: Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois,Los Alamos National Laboratory, Los Alamos, NM, USA

Publication date: 2007-04-01