Numerical Investigations on Several Stabilized Finite Element Methods for the Stokes Eigenvalue Problem

Table 5

Results get from the local Gauss integration method with the nonconforming element.

1/ℎ	CPU-time	𝜆ℎ	|𝜆ℎ−𝜆|/𝜆	Rate
8	0.031	50.2121	0.0407434	—
16	0.125	51.7355	0.0116391	1.8076
24	0.344	52.0619	0.00540181	1.8932
32	0.672	52.1825	0.00309932	1.9311
40	1.156	52.2397	0.00200547	1.9508
48	1.859	52.2713	0.00140228	1.9624
56	2.797	52.2905	0.00103505	1.9698
64	4.001	52.3031	0.000795121	1.9749