Module Development of Multiphase and Chemically Reacting Flow in LS-DYNA® Compressible Flow Solver

We reported a significant progress of the simulation module developments such as the cavitation, supersonic heterogeneous combustion, and gaseous detonations for the compressible flow solver. The homogeneous equilibrium model (HEM) based on the acoustic speed of the mixture of liquid and vapor was implemented for automotive diesel injectors, where the cavitation effects should correctly predict for the nozzle design. The heterogeneous combustion based on an Eulerian-Lagrangian model was developed for thermobaric explosive (TBX) applications in which a stochastic particle technique in conjunction with a probability density function (PDF) is adopted. In modeling of gaseous detonation, we implemented various combustion modules depending on the reaction model: one-step reaction (ZND model), reduced reaction of intrinsic low-dimensional manifolds (ILDM), and detailed chemistry model. Application results validated with experimental data are demonstrated with detailed discussion.