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IRSN, Institut de radioprotection et de sûreté nucléaire

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Enhancing Nuclear Safety


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Experimental study on fire induced smoke propagation between confined and forced ventilated rooms - first results on a reduced scale model


Congress title :Interflam 2007 - 11th International Conference on Fire Science and Engineering
Congress town :Londres
Congress date :03/09/2007

Summary

This study deals with fire-induced smoke propagation between confined and forced ventilated rooms in the framework of a research program undertaken by the French institute "Institut de Radioprotection et de Sûreté Nucléaire" in collaboration with the University of Marseille. The objective is to investigate the effects of confinement and of mechanical ventilation on smoke movements in rooms, particularly on smoke fillings, opening flow and spill plume. The fire scenario consists in two rooms coupled to a ventilation network and connected each other with a door. An experimental approach based on reduced scale model with air-helium is used to simulate fire-induced smoke propagation. Tomography laser visualizations were carried out to get first qualitative results on the effects of confinement and ventilation on smoke flows. Velocity and temperature measurements performed at the doorway allow discussing about the interest of air addition in the modelling technique used. Finally, advantages and limits of the air-helium modelling method are given.
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