Abstract:
This paper presents a GPU-based, incompressible, multiphase generalized finite difference
solver for simulating multiphase flow. The method includes a dampening scheme that allows for
large density ratio cases to be simulated. Two verification studies are performed by simulating
the relaxation of a square droplet surrounded by a light fluid and a bubble rising in a denser fluid.
The scheme is also used to simulate the collision of binary droplets at moderate Reynolds numbers
(250–550). The effects of the surface tension and density ratio are explored in this work by considering
cases withWeber numbers of 8 and 180 and density ratios of 2:1 and 1000:1. The robustness of the
multiphase scheme is highlighted when resolving thin fluid structures arising in both high and low
density ratio cases at We = 180.
