Table 3. Rayleigh Number, Ra, and Average Transport Velocity uy,av for the Experiments Presented in This Study Using Rocks and for a Previous Study Using Random Beadpacks with Distinct Bead Sizes37,a.
| Ra (uy,av) | uy,av [cm/min] | ||
|---|---|---|---|
| Bentheimer | #1 | 7924 (2 300) | 0.09 (0.02) |
| #2 | 10,188 (1 247) | 0.07 (0.01) | |
| Boise | #1 | 19,648 (4 987) | 0.25 (0.05) |
| #2 | 15,719 (3 405) | 0.20 (0.03) | |
| Mt gambier | #1 | 8765 (2 316) | 0.20 (0.05) |
| #2 | 9641 (2 756) | 0.22 (0.06) | |
| beads | 55 μm | 1069 | 0.02 |
| 100 μm | 3215 | 0.06 | |
| 250 μm | 25,423 | 0.49 |
a
The values in parentheses represent the computed uncertainties. For uy,av, the uncertainty is calculated as the standard deviation around the mean. The uncertainty in Ra is obtained upon the application of classic rules of error propagation.