Fire safety in atria, tunnels and subway stations

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The proposed research program deals with fire safety in tunnels and large spaces such as subway stations and atria.  The research, which aims at improving the effectiveness of active fire protection systems in these areas, combines both experiments and computer modelling.  The experimental work will be performed in the newly constructed full-scale fire research facilities of Carleton University.  These facilities, which are adjacent to NRC's full-scale Fire Laboratory, include a tunnel, and a 10-storey atrium both of which are served by a high capacity ventilation system.  The proposed work is divided into four distinct areas: in the first area the research is focused on developing procedures for measuring experimentally the heat release rate of large fires occurring in both the tunnel and the atrium; the second area deals with atrium smoke management systems and the impact of make-up air velocity on their effectiveness; the third area will investigate fire detection systems in tunnels; and the fourth area will study the interaction between tunnel ventilation and suppression systems.  In all proposed research areas both computer modelling using computational fluid dynamics models and experiments will be used.  Comparisons between experimental data and model predictions will be made for model validation.  In addition the models will be used to develop correlations and guidelines for the design of these systems.