Numerical simulation of particle erosion in the internal flow field of solid rocket motor nozzle using Rocstar

Solid composite propellants often contain metal particles, such as aluminum and the internal flow field in a solid rocket motor is typical gas–solid two-phase field. In this study, to address problem of erosion particles on wall during working process an engine, particle model was established based interaction mechanism between wall. From perspective dynamics, moving analyzed. The force surface obtained, formula for solving rate deduced by using strength theory energy conservation principle. It combined with Hertz’s contact analyze factors influencing rate. paper, experiments revealed not only relationship angle but also correlativity concentration. addition, experimental results are consistent results, which proves reliability paper. multiphysics simulation program Rocstar, developed Center Simulation Advanced Rockets at University Illinois, used perform numerical Jet Propulsion Laboratory nozzle. agreed well literature data. feasibility accuracy calculation gas-phase fields nozzle were confirmed, laying foundation entire full engine.