Quantifying Uncertainty from Computational Factors in Simulations of a Model Ballistic System
US Army Research Laboratory Aberdeen Proving Ground United States
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Uncertainty in simulations of a model ballistic system is studied, with a focus on factors that are primarily related to the numerical structuring of a problem, such as cell size, domain extent, and system orientation. Depth of penetration of a threat into a target is tracked as the primary quantity of interest. Overall, computational time serves as a secondary performance metric. Two different simulation codes developed at Sandia National Laboratories, CTH and ALEGRA, are employed in this investigation. This study provides a foundation for future explorations of uncertainty in ballistic simulations, as well as a template for investigation of uncertainty in simulations of other systems of interest.