Where the study of flows involving solid particles, gas bubbles or fluid droplets is required, STAR-CCM+ has a number of different options.
STAR-CCM+’s Lagrangian multiphase model is the ideal tool for the study of the transport of a high number of dispersed particles such as liquid sprays.
Available for both steady state and transient solutions, the Lagrangian multiphase model has a number of supplementary models to enhance the accuracy and realism of the simulation. These models include: drag relationships, coulomb forces, mass transfer, particle chemical reactions and radiation, droplet breakup and atomization, collision and coalescence. As a particle impacts a wall, the user has control over its resultant behaviour - this includes interaction models such as Bai-Gosman as well as the formation of fluid films.
Discrete Element Method (DEM)
DEM can be used to simulate the motion of a large number of interacting discrete particles, such as the granular flow of sand, food particles, metal powders, capsules and slurries. STAR-CCM+ is the first commercial engineering simulation tool to include a DEM capability that is fully coupled with numerical flow simulation in a single software environment.
STAR-CCM+ is able to model both spherical and composite shapes as well as clumps of particles. In common with lagrangian multiphase, a number of models for the prediction of particle drag are available as well as particle heat transfer including interparticle conduction. Particles may also be bonded together with the bonds able to be broken under the mechanical forces acting on them.