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

Table 6

𝐻¹- and 𝐿²-errors on nonmatching grids: 𝑛=5.

𝑁	‖𝐮−𝐮^ℎ‖1,∗	‖𝐮−𝐮^ℎ‖0	‖𝑝−𝑝^ℎ‖0
4×4	3.76𝑒−1	2.11𝑒−3	1.08𝑒−1
8×8	1.85𝑒−1	5.19𝑒−4	5.21𝑒−2
16×16	9.08𝑒−2	1.28𝑒−4	2.59𝑒−2
32×32	4.56𝑒−2	3.15𝑒−5	1.28𝑒−2