The tunnel setup also provides wind-chill cooling, moving air as in a wind-tunnel through the length of the house. A velocity of at least 2.54 m/s is needed for most effective wind-chill cooling. Figure 15: Tunnel ventilation is designed to move large amounts of high-velocity air ove...
This means that forming air curtains prevents droplets from spreading and creates safe spaces in the room. Figure 13 shows the time-dependent changes in the fraction of droplets remaining in the space (NTn). When the ventilation air flow is along the length of the indoor space (Case 1), ...