An Alternative HSS Preconditioner for the Unsteady Incompressible Navier-Stokes Equations in Rotation Form

Table 3

Results for 2D unsteady Oseen problem different values of 𝛼 (exact solves) and 𝜈=0.01.

Grid	𝛼=10	𝛼=20	𝛼=50	𝛼=100
8×8	3	3	2	2
16×16	4	3	3	2
32×32	5	4	3	3
64×64	8	5	3	3
128×128	9	6	4	3