New research from Belgium conclude that mobile fans can be used for controlling smoke in tunnels. However there are limitations on how effective mobile fans is, but also the conditions that which is the basis for research. However mobile fans are so much more than a single fan, it can provide additional water, have adjustment options in height and be used to move vehicles and debris.
The air velocity in tunnels is important in a tunnel management system and a crucial part of ventilating in both a normal situation and when a fire incident occur. The quality of the output from the automatic control in the SCADA system and decisions that has to be made by the traffic Control Centre is only as good as its sensors.
The IDA Tunnel, software from EQUA Simulation AB, allows the engineer to simulate road and rail tunnel design projects, including full range of ventilation and fire design tasks. The software delivers now improved algorithms that increase robustness and speed to the simulations so that computed results can be animated in the context of a full 3D representation of the tunnel network.