Table 1 Computed H and its error \(\mathrm{Er} = H_{\mathrm{Ref}} - H\) with respect to the reference \(H_{\mathrm{Ref}}\) (H with \(n = 6400\)) for different values of n. \(H_{\mathrm{Ref}}\) is 5.8968 (m3/s) in the overestimation case and is 4.9057 (m3/s) in the underestimation case. The convergence rate “Conv” at each n is \(\log _{2} ( Er \vert _{n/2}/ Er \vert _{n} )\)
n | Overestimation case | Underestimation case | ||||
|---|---|---|---|---|---|---|
H | Er | Conv | H | Er | Conv | |
3200 | 5.8966 | 1.832.E−04 | 1.49.E+00 | 4.9056 | 1.370.E−04 | 1.49.E+00 |
1600 | 5.8963 | 5.143.E−04 | 1.11.E+00 | 4.9053 | 3.848.E−04 | 1.11.E+00 |
800 | 5.8957 | 1.108.E−03 | 9.64.E−01 | 4.9049 | 8.287.E−04 | 9.64.E−01 |
400 | 5.8947 | 2.161.E−03 | 9.22.E−01 | 4.9041 | 1.617.E−03 | 9.22.E−01 |
200 | 5.8927 | 4.095.E−03 | 4.9027 | 3.064.E−03 | ||