UQ studies of detonation shock dynamics

There has been growing interest in uncertainty quantification (UQ) for high-explosive (HE) performance models. However, most previous work has focused on the reactant and product equations of state. Detonation shock dynamics (DSD) has been a powerful and widely used method for modeling the size-effect and corner-turning of high explosives. When an HE detonates in a finite geometry, there is a decrement in the detonation velocity (known as the ‘size effect’), as well as an introduction of curvature to the detonation front. In our previous UQ work, we limited ourselves to comparing the Eyring (analytic) model of the size-effect, to DSD models calibrated using only size-effect data. Here, we rectify this limitation by including both front-shape and size-effect data in our DSD UQ studies. These results will shed light on DSD parameter correlations and uncertainties given the currently available size-effect and detonation front-shape data, as well as allow us to gauge the importance of the front-shape data via comparison to our previous results.