A Preconditioner for FETI-DP Method of Stokes Problem with Mortar-Type CR(ℎ)−𝑃₀(ℎ) Discretization

Table 7

𝐻¹- and 𝐿²-errors on nonmatching grids: 𝑛=9.

𝑁	‖𝐮−𝐮^ℎ‖1,∗	‖𝐮−𝐮^ℎ‖0	‖𝑝−𝑝^ℎ‖0
4×4	7.21𝑒−1	7.73𝑒−3	2.91𝑒−1
8×8	3.58𝑒−1	1.92𝑒−3	1.47𝑒−1
16×16	1.81𝑒−1	4.52𝑒−4	5.19𝑒−2
32×32	8.94𝑒−2	1.15𝑒−4	2.61𝑒−2