Table 4. Sensitivity Analysis by Variation in Parameters.
| parameters of interest | original magnitude | induced variation | RMSE | MAPE | % change in final recovered mass |
|---|---|---|---|---|---|
| permeability (K) | 1.41 × 10–10 | +5% | 2.8335 | 10.566 | 0.8053 |
| –5% | 2.2526 | 9.5923 | 4.4536 | ||
| porosity (φ) | 0.38 | +5% | 2.8335 | 13.228 | 0.8053 |
| –5% | 6.1022 | 23.967 | 10.5298 | ||
| density of oil (ρ) | 977 | +5% | 6.1878 | 24.242 | 10.6865 |
| –5% | 2.6572 | 12.432 | 0.1449 | ||
| diffusion coefficient (D) | 5 × 10–12 | +5% | 4.2473 | 18.326 | 5.4157 |
| –5% | 2.3134 | 9.587 | 5.1257 | ||
| number of grid points (Nj) | 8 | 9 | 30.679 | 91.339 | 73.4692 |
| 7 | 13.946 | 31.431 | 37.6258 |