is not able to properly describe the flow of a liquid over a chemically patterned surface with different wetting properties, and does not accurately predict contact line velocity [@yamamoto2013].

In this work, a validation study of a Volume Of Fluid (VOF) implementation of a contact line model called the Generalized Navier Boundary Condition (GNBC) is presented. While the non-sharp interface of the VOF method implicitly resolves the contact line singularity problem, even with a no-slip condition at the wall [@seppecher1996; @chen2000; @sibley2013], the question of what is the right contact angle is still valid for this method. In addition to applying the Navier slip condition at the wall, the GNBC uses the reduced Young’s stress as a restoring force when the contact angle deviates from its equilibrium value, and is informed by Molecular Dynamics [@qian2003; @gentner2004]. While previous implementations used a friction factor to link the reduced Young’s stress to a contact line velocity [@gerbeau2009], this approach does not work for the VOF model, because of the implicit slip of the interface [@ashish2009]. Instead, in this work, the reduced Young’s stress is used directly as a source term in the navier stokes equations [@mahady2015]. A consequence of using the GNBC 