  The free surface lattice Boltzmann method (FSLBM) is a combination of the
hydrodynamic lattice Boltzmann method (LBM) with a volume of fluid (VOF)
interface apturing technique for the simulation of incompressible free surface
flows. Capillary effects are modeled by extracting the curvature of the
interface from the VOF indicator function and imposing a pressure jump at the
free boundary. However, obtaining accurate curvature estimates from a VOF
description can introduce significant errors. This article reports numerical
results for three different surface tension models in standard test cases, and
compares the according errors in the velocity field (spurious currents).
Furthermore, the FSLBM is shown to be suited to simulate wetting effects at
solid boundaries. To this end, a new method is developed to represent wetting
boundary conditions in a least squares curvature econstruction technique. The
main limitations of the current FSLBM are analyzed and are found to be caused
by its simplified advection scheme. Possible improvements are suggested.
