Shock-to-Detonation Transition simulations

Abstract

Shock-to-detonation transition (SDT) experiments with embedded velocity gauges provide data that can be used for both calibration and validation of high explosive (HE) burn models. Typically, a series of experiments is performed for each HE in which the initial shock pressure is varied. Here we describe a methodology for automating a series of SDT simulations and comparing numerical tracer particle velocities with the experimental gauge data. Illustrative examples are shown for PBX 9502 using the HE models implemented in the xRage ASC code at LANL.

SURF Model Calibration Strategy

“…Shock-to-detonation transition experiments with embedded velocity gauges provides information on the flow behind the lead shock [Gustavsen et al, 1999]. Numerical profiles can be calculated by simulating gas-gun experiments with Lagrangian tracer particles at the gauge locations [Menikoff, 2015b]. The shape of the profiles are determined by the model function g(s).…”