Simulation of the casting process of an Al-AP-HTPB propellant with an open source solver

The purpose of this work is to understand and evaluate the phenomena that influence the burning rate. In particular it focuses on the separation between solid and liquid phase during the casting process. To evaluate it an open source solver is used (OpenFOAM) with the addition of formulas that allow to evaluate the difference in concentration of solid particles. The obtained results show a significant agreement between experimental data and previous studies, used as references, and the predicted ones. This work is the starting point from which other future studies can draw inspiration to continue the analysis in more detail.