Table 1 Results of θ obtained from the FEM and fifth-order approximation
From: An approximate analytical solution of Richards equation with finite boundary
Ï• (mm/min 1/2 ) | Present method | FEM | Relative error (%) |
|---|---|---|---|
36.3899 | 0.5001 | 0.5 | 0.02 |
20.1946 | 0.55 | 0.54266 | 1.353 |
18.1551 | 0.6 | 0.594696 | 0.892 |
14.8670 | 0.7 | 0.69924 | 0.109 |
11.2396 | 0.8 | 0.8007 | −0.087 |
6.5490 | 0.9 | 0.900045 | −0.005 |
0 | 1 | 1 | 0 |