Numerical Investigations of Smoke Management System in a Movie Theatre

Le résumé fourni par la source

View Video Presentation: https://doi.org/10.2514/6.2022-1634.vid Smoke management system in all buildings received great interest as a way to decrease fatalities during fires as it prevents spread of fire and provides a safe escape route for occupants. This research provides a numerical study for smoke control in the cinema. This research investigates the effects of natural ventilation and mechanical ventilation on basic design parameters such as smoke layer height, concentration of carbon monoxide (CO), temperature, and visibility at the entry and the exit doors which are the evacuation routes in the cinema. Fire Dynamic Simulator (FDS) was used in simulating seven design cases in a cinema hall that has dimensions of 13.8 m length, 13.5 m width and 6.5 m height. The FDS results were validated and the numerical results of FDS are shown to be in good agreement with the results of the experiment that is presented by Rinee et al. The results show that not using natural ventilation by closing the doors is very dangerous as the tenable conditions are worsened and exceed critical limit and the entry and the exit doors are exposed to high danger so natural ventilation is important. Also the results indicated that the mechanical ventilation is very important as increasing the air change per hour enhances the tenable conditions as it decreases the temperature and the concentration of CO and it makes them in the accepted range, also it enhances the visibility leading to easier and safe escape for the occupants.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.