Matthew Otwinowski
Scaling Analysis Of Acid Rock Drainage
APPENDIX B
Numerical solutions by the finite elements method
Figs. B1 and B2 present Numerical results for the two piles, 12 m and 18 m high, analyzed in Scenario 1 in Section 5.1. The numerical values are obtained for trapezoidal piles with the base 100 meters long. The maximum temperatures in both cases are by about 1°C lower than the values obtained analytically. This difference is due to the cooling effect resulting from the heat escape through the side boundaries. The numerical results confirm the results of the scaling analysis.
| Fig. B1(a). Temperature profile for the pile 12 m high (y-axis) and 100 m long (x-axis); L=6 m; all Entry data listed in Table 5.1. Analytical results are presented in Fig. 5.2. |
| Fig. B1(b). Oxygen Concentration Profile for the pile 12 m high (y-axis) and 100 m long (x-axis); L=6 m; all entry data listed in Table 5.1. |
| Fig. B2(a). Temperature profile for the pile 18 m high (y-axis) and 100 m long (x-axis); L=9m; all entry data listed in Table 5.1. Analytical results are presented in Fig. 5.3. |
| Fig. B2(b). Oxygen concentration profile for the pile 18 m high (y-axis) and 100 m long (x-axis); L=9m; all entry data listed in Table 5.1. |
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