The computational mesh of the entire domain is created
with the help of the ANSYS meshing tool. For the implementation
of the periodic boundary conditions, first identical
surface meshes at the corresponding opposite side
walls 1 and 2 were created. These surfaces were then
used to create a tetrahedral volume mesh. A side-view
on the mesh on sidewall 2 is shown in Figure 3.40, and
the used number of elements, nodes, and faces is given
in Table 3.9.