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Table 4 The results of θ obtained from the present method and the FEM in \(\pmb{x_{{d}}=1.5\mbox{ mm}}\)

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

t (s) Present method FEM Relative error (%)
3.58233 0.27141 0.2771 −2.05341
4.211 0.29188 0.2929 −0.34824
4.97556 0.30889 0.3075 0.452033
5.2274 0.31535 0.314 0.429936
6.026 0.32109 0.3208 0.090399
7.036 0.32607 0.32878 −0.82426