ON THE IMPLEMENTATION OF SYMMETRICAL AND ANTISYMMETRIC PERIODIC BOUNDARY-CONDITIONS FOR INCOMPRESSIBLE-FLOW

In this paper we consider symmetric and antisymmetric periodic boundar y conditions for flows governed by the incompressible Navier-Stokes eq uations. Classical periodic boundary conditions are studied as well as symmetric and antisymmetric periodic boundary conditions in which the re is a pressure difference between inlet and outlet. The implementati on of this type of boundary conditions in a finite element code using the penalty function formulation is treated and also the implementatio n in a finite volume code based on pressure correction. The methods ar e demonstrated by computation of a flow through a staggered tube bundl e.