Implementation of a Slip Boundary Condition in a Finite Volume Code Aimed to Predict Fluid Flows

This work describes the implementation of the slip boundary condition on solid walls in a numerical code, based on the finite volume method, for the solution of the Navier-Stokes system of equations. Specific numerical issues related to this implementation upon the flow and stress fields are discussed and three different slip models are compared. The numerical predictions are validated against simple problems with analytical solution, and other more complex flows are studied to test the accuracy and robustness of the slip model implementation