Table 3 Results of θ obtained from the FEM and second-order approximation
From: An approximate analytical solution of Richards equation with finite boundary
Ï• (mm/s 1/2 ) | 2nd-order approximation | FEM | Relative error (%) |
|---|---|---|---|
0.9316 | 0.251 | 0.2529 | −0.757 |
0.8717 | 0.255 | 0.2594 | −1.71 |
0.8397 | 0.26 | 0.2656 | −2.097 |
0.7651 | 0.28 | 0.2853 | −1.861 |
0.7012 | 0.3 | 0.3033 | −1.076 |
0.483 | 0.35 | 0.3499 | 0.025 |
0.3418 | 0.37 | 0.3697 | 0.09 |
0 | 0.4 | 0.4 | 0 |