11
Figure 15. Velocity streamlines of the model with the truck at t =20 seconds
coming out of the mine. Figure 16 presents the airflow
quantity at different sampling locations for simulation time.
Simulation results show that the airflow pattern at different
sampling locations is impacted by truck movement. When
the truck is going in the mine, it pushes the air while enter-
ing the mine leading to higher airflow at the Main Return
(Location 4). The truck is working against the flow of air
from the fan when the truck is coming out of the mine
Figure 16. Average air velocity through different sampling locations with truck movement