APPLICATION OF HEMSim, A THERMOCHEMICAL MULTIPHASE CODE FOR HIGHLY ENERGETIC MATERIALS

HEMSim (Highly Energetic Materials Simulator) is a software tool for simulating the thermodynamic behavior of energetic materials, such as explosives and propellants. The software includes multiple modules capable of describing phenomena such as ideal detonation, isochoric combustion, and isobaric combustion. Moreover, the code can predict the behavior of high-pressure, high-temperature multiphase mixtures through the implementation of appropriate equations of state. The software has been validated against experimental data and theoretical benchmarks available in the literature, demonstrating good accuracy in predicting key detonation parameters and the thermodynamic quantities associated with combustion processes. HEMSim provides comprehensive support for simulating the expansion of detonation products in the context of rock blasting. Another important application area is safety analysis, where the software includes a dedicated tool implementing empirical and semi-empirical models to estimate the atmospheric dispersion of species released during an explosion and to evaluate the extent of fallout area