Table 2 Simulated and measured values of airflow velocity at the measurement points.
Position of the measurement point | Velocity (m/s) | Distance between the measurement section and the heading face (m) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
8 | 16 | 24 | 32 | 40 | 48 | 56 | 64 | 72 | 80 | ||
A (x, 0.8 m, 1.0 m) | Simulation results | 3.04 | 0.52 | 0.82 | 0.11 | 0.24 | 0.39 | 0.23 | 0.21 | 0.23 | 0.22 |
Measured results | 3.09 | 0.54 | 0.84 | 0.12 | 0.22 | 0.41 | 0.25 | 0.23 | 0.24 | 0.24 | |
Relative error (%) | 1.62 | 3.70 | 2.38 | 8.33 | 9.09 | 4.88 | 8.00 | 8.70 | 4.17 | 8.33 | |
B (x, 3.3 m, 1.8 m) | Simulation results | 0.33 | 1.13 | 0.31 | 0.22 | 0.05 | 0.14 | 0.22 | 0.22 | 0.21 | 0.21 |
Measured results | 0.32 | 1.15 | 0.33 | 0.24 | 0.06 | 0.15 | 0.24 | 0.23 | 0.20 | 0.20 | |
Relative error (%) | 3.12 | 1.74 | 6.06 | 8.33 | 16.6 | 6.67 | 8.33 | 4.35 | 5.00 | 5.00 | |
