  Simulations of wetting phenomena by a meshfree particle method are presented.
The incompressible Navier-Stokes equations are used to model the two-phase
flow. The continuous surface force model is used to incorporate the surface
tension force. Chorin's projection method is applied to discretize the
Navier-Stokes equations. The different fluid phases are identified by assigning
different colors and different material properties (density, viscosity) to the
particles that remain unchanged throughout a simulation. Two-phase flow is
captured by a one-fluid model via using weighted averages of the density and
viscosity in a region around the fluid-fluid interface. The differential
operators at each particle are computed from the surrounding cloud of particles
with the help of the least-squares method. The numerical results are compared
with specific analytical solutions, but also with previously considered test
cases involving wetting of a container and sessile drops. A good overall
agreement is found.
