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Table 2 The results of θ obtained from the present method and the FEM in \(\pmb{x_{{d}}=9\mbox{ mm}}\)

From: An approximate analytical solution of Richards equation with finite boundary

t (min) Present method FEM Relative error (%)
0.1276 0.505193 0.5027 0.4959
0.2169 0.550959 0.562178 −1.9956
0.2794 0.62067 0.6319 −1.7772
0.3149 0.65244 0.6587 −0.9504
0.3666 0.692165 0.69494 −0.3993
0.4685 0.742965 0.743 −0.0047
0.5337 0.76222 0.7638 −0.2069
0.5765 0.77126 0.7737 −0.3154
0.6353 0.780382 0.7841 −0.4742
0.658 0.783064 0.7874 −0.5507
0.6772 0.785114 0.7897 −0.5807