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Geofluids
/
2021
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Article
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Tab 1
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Research Article
CFD-Based Determination of the Optimal Blowing and Suction Air Volume Ratio of Dual-Radial Swirl Shielding Ventilation in a Fully Mechanized Excavation Face
Table 1
Parameter setting of boundary conditions.
Blowing and suction air volume ratio
The air volume of the suction tube (m
3
/min)
Suction outlet wind speed (m/s)
Air volume out of annular slit (m
3
/min)
Outlet wind speed of annular slit (m/s)
1#
2#
3#
4#
1.2
250.00
14.74
175.00
125.00
12.90
9.22
1.3
230.77
13.61
1.4
214.29
12.64
1.5
200.00
11.80
1.6
187.50
11.06
1.7
176.47
10.41