An Explicit Stabilized Runge–Kutta–Legendre Super Time-Stepping Scheme for the Richards Equation

Table 3

Test of RKL scheme with EXPL, IMPL, and CN in .

	CPU time (sec)
5	46.2	3.23587E−02	3.22906E−02	3.22784E−02
10	24.78	2.02935E−02	1.99448E−02	1.98998E−02
20	14.37	1.10585E−02	9.97846E−03	9.79713E−03
25	12.93	8.77606E−03	7.04349E−03	6.75439E−03
30	11.07	6.38021E−03	2.99619E−03	2.55873E−03
35	9.81	4.97194E−03	8.79174E−04	2.55407E−04
40	9.51	3.84175E−03	1.69154E−03	2.53512E−03
45	8.97	2.43071E−03	6.18330E−03	6.84142E−03
50	8.52	4.63038E−05	1.01977E−02	1.32881E−02
55	7.92	8.80764E−04	1.05394E−02	1.08956E−02
60	7.32	3.32750E−03	1.67543E−02	2.22226E−02
65	7.44	5.05941E−03	1.72343E−02	2.45424E−02
80	6.33	1.35737E−02	3.17820E−02	7.01856E−02
100	7.35	1.27567E−02	3.22055E−02	6.30587E−02