The Effects of the Treatment of the Periodic Boundary Condition in TRIAINA Codes with a Pressure Tube Creep Problem

Figure 1

Comparison of the PBC and RBC. Implementation of the periodic boundary condition: (i) difference of periodic BC and reflective BC and (ii) physical interpretation. (a) Because the same structure is repeated for the periodic BC, the flux values of the same position on the every line on the periodic BC are the same. (b) Because the GMSH gives the same coordinates for the nodes on the periodic boundary condition, the implementation of the periodic BC is much easier.