Grid Expansion Ratio

Подпись: Fig. 20 RAE 2822 case9 — expansion ratio of the grid in the boundary layer (left), error in cf caused by the grid expansion ratio near the wall in % (right)

The graphical output of the maximal grid expansion in the boundary layer is given as a surface value in the TAU routines. Again the differences in the friction Cf to the results of the ideal reference grid with an expansion ratio of 1.1 were written out as an expected error in % (fig. 20 & 21).