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DOE OSTI · 1569701

Eulerian Applications Project - xRage: High Explosives Package [Slides]

Grove, John W.
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Abstract

At the most elementary level, the high explosive model in xRage (or many other hydro codes) computes the amount of material that changes from a high explosive reactant to a high explosive product during a time step and accounts for the energy added to the flow by this reaction. The actual chemical reactions that occur during this conversion are not modeled. These processes are very complicated and involve levels of spatial and temporal resolution that are generally not practical for an application code. They would also require a state variable representation that includes all of the chemical species that are produced by the reaction and account for multiple stage chemical reactions. Instead the explosive models we generally use are phenomenological and try to represent the most important physics that drive the explosive wave in a very simplified way. These models generally have a number of tunable parameters that must be calibrated to experiment.

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45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE97 MATHEMATICS AND COMPUTING

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Grove, John W.. 2019-09-30. Eulerian Applications Project - xRage: High Explosives Package [Slides]. https://doi.org/10.2172/1569701

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