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

Table 4

𝐻¹- and 𝐿²-errors on matching grids.

𝑁=4×4	𝑛=5	𝑛=9	‖𝐮−𝐮^ℎ‖1,∗	‖𝐮−𝐮^ℎ‖0	‖𝑝−𝑝^ℎ‖0
𝑛	𝑁	𝑁
5	4×4		6.60𝑒−1	6.34𝑒−3	1.68𝑒−1
9	8×8	4×4	3.44𝑒−1	1.61𝑒−3	8.51𝑒−2
17	16×16	8×8	1.73𝑒−1	4.13𝑒−4	4.23𝑒−2
33	32×32	16×16	8.71𝑒−2	1.05𝑒−4	2.09𝑒−2
65		32×32	4.35𝑒−2	2.54𝑒−5	1.06𝑒−2