Table 4.
Key turbulence-based factors expected to influence deagglomeration.
| Inhaler number and flow ratea | kb (m2/s2) | TIb (%) | ωb (1/s) | NDSDb (dimensionless) | MMDc (μm) |
|---|---|---|---|---|---|
| 1 at 45 LPM | 4.2 | 13.5 | 61,949 | 82.6 | 1.35 (0.02)d |
| 2 at 45 LPM | 5.6 | 20.1 | 111,303 | 148.4 | 1.21 (0.1) |
| 3 at 45 LPM | 12.1 | 47.2 | 64,846 | 86.5 | 1.36 (0.07) |
| 4 at 60 LPM | 143.0 | 35.3 | 96,020 | 96.0 | 1.27 (0.07) |
| 4 at 75 LPM | 474.2 | 50.5 | 132,866 | 106.3 | 1.27 (0.14) |
| 5 at 45 LPM | 9.5 | 38.3 | 72,673 | 96.9 | 1.31 (0.03) |
| 6 at 45 LPM | 19.1 | 26.03 | 127,277 | 169.7 | 0.98 (0.04) |
| 6 at 60 LPM | 28.3 | 23.9 | 148,323 | 148.3 | 1.03 (0.05) |
| 7 at 45 LPM | 10.0 | 30.7 | 75,565 | 100.8 | 1.28 (0.03) |
| 8 at 45 LPM | 6.7 | 22.2 | 115,799 | 154.4 | 1.18 (0.06) |
a
Denotes inhaler number and flow rate (LPM)
b
Volume-averaged quantities within the flow passage of each inhaler
c
Estimated based on measured MMAD and the skeletal density of the primary particles (ρp = 1.325 g/cm3)
d
Standard deviations (SD) of experimental results based on n ≥ 3 trials