Grid A

Grid B

Grid C

Domain L_x ´ L_y ´ L_z

37D ´ 6.67D ´ 6.67D

Grid points N_x ´ N_y ´ N_z

111 ´ 21 ´21

222 ´ 42 ´ 42

444 ´ 84 ´ 84

Grid spacing h_x = h_y = h_z

D/3

D/6

D/12

Feedback gain K* [-]

5.4

10.8

21.6

Time step h_t [s]

0.01

Reynolds number Re

1200

Residual at convergence [-]

1.0 ´ 10⁻²

Relative CPU time

1 (2 CPU)

3 (2 CPU)

55 (4 CPU)