Smoke movement and design of smoke control in atrium bldgs

The smoke movement pattern during an atrium fire can be simulated by the technique of field modelling. It is also possible to assess the different approaches of smoke control methods. The information achieved is useful for designing an actual fire system. As illustrated, the 'smoke extraction away from the atrium' scheme is not an effective method for preventing smoke spread into the atrium. Either a high volume of intake air blowing from the atrium or a large extraction fan to be installed in every compartment is required. Both alternatives seem not practical. Other active systems, such as sprinklers, have to be investigated carefully.