Multipurpose | Posted on
December 5th, 2013 by
The trajectories of particles through fields can often be modeled using a one-way coupling between physics interfaces. In other words, we can first compute the fields, such as an electric field, magnetic field, or fluid velocity field, and then use these fields to exert forces on the particles using the Particle Tracing Module. If the number density of the particles is very large, however, the particles begin to noticeably perturb the fields around them, and a two-way coupling is needed — that is, the fields affect the motion of the particles, and the particle trajectories affect the fields. For example, charged particles act as point sources that affect the electric field around them, and small particles that move through a fluid may drag the fluid with them. Although two-way coupling between particles and fields presents new modeling challenges and is computationally more time-consuming than one-way coupling, new tools available in COMSOL version 4.4 can address many of these challenges by using an efficient, self-consistent approach.
Read more on: COMSOL 4.4 Brings Particle-Field and Fluid-Particle Interactions