Table 1.
Speed of sand flow v (mm/s) with different diameters of sand and beads.
| D (mm) | 25 | 21 | 16 | 12 |
|---|---|---|---|---|
| d (mm) | ||||
| 0.1–0.5 | 43.0 | 34.0 | 20.0 | 13.0 |
| 0.5–1.0 | 30.0 | 26.0 | 11.0 | 3.0 |
| 1.0–2.0 | 19.0 | 13.0 | 0.0 | 0.0 |
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