A PSBFEM Approach for Solving Seepage Problems Based on the Pixel Quadtree Mesh

Table 5

Hydraulic head of monitor points at six various time intervals.

Time (days)	Reference solutions	Methods
		FEM	Relative error (%)	PSBFEM	Relative error (%)
500	13.18	13.13	0.37	13.31	1.01
1000	20.32	20.24	0.40	20.41	0.43
1500	22.15	22.07	0.38	22.20	0.22
2000	23.06	22.99	0.28	23.08	0.11
2500	23.51	23.47	0.19	23.52	0.05
3000	23.74	23.71	0.12	23.74	0.02