ISSN Online: 2379-1748
ISBN Flash Drive: 978-1-56700-469-4
ISBN Online: 978-1-56700-470-0
Second Thermal and Fluids Engineering Conference
MODELING AND SIMULATION OF DROPLET DYNAMICS WITH A LAGRANGIAN VOLUME OF FLUID METHOD
要約
We present a modified Lagrangian volume of fluid method for the simulation of multiphase flows. Particles
with an intermediate volume of fluid explicitly resolve the interface in this updated formulation. This differs
from previous implementations that do not include interfacial particles. Explicit resolution of the interface
allows for surface tension to be calculated exclusively on particles belonging to the interface, similar to a
front tracking method. Unlike front tracking methods, this updated Lagrangian volume of fluid uses the finite
particle method to sample all particles nearby the interface, and therefore connectivity of particles is not
required. Preliminary testing of geometric accuracy is presented, and for the arrangements considered the error
in curvature can be as small as 0.5% and as large as 10%. The method is additionally shown to appropriately
simulate oscillating droplets, but it fails to rigorously simulate a droplet in shear flow near the critical Capillary
number due to the lack of particle reseeding in the current implementation.