Simulation of detonation-driven particle motion employing the compressible MRG force model -- comparison against microscale experiments

Recent work in the high-speed, multiphase flow community has demonstrated the predictive aptitude of the compressible Maxey-Riley-Gatignol (C-MRG) force model for problems of shock-particle interaction. High-quality data from an explosive, multiphase flow experiment permits an exploration of the model’s accuracy in the detonation-driven flow regime. Calibrated explosive model parameters from a UQ-driven flow study afford a time-dependent simulation flow field that agrees with experimental measurements. Finite-volume, Euler-Lagrange simulations employing the Faxén form of the particle force model are performed, where spatial and temporal variations of flow properties on the scale of the particle are considered. The explosion-induced motion of a few tungsten particles is captured by precisely timed X-ray exposures, and compared with simulation results for evaluation of the accuracy of the force model.