AT-01-11-2 -- The Smoke Hazard from a Fire in High Spaces PDF

In a recently completed research project sponsored by ASHRAE (899-RP), the National Research Council of Canada used full-scale physical model studies combined with CFD modeling to investigate the effectiveness of mechanical smoke exhaust systems used for atrium smoke management. The previous publications resulting from this research focused on the impact of plugholing on the effectiveness of a smoke management system. In this paper, the research results are used to investigate the impact on smoke venting of the ceiling jet formed when the plume impinges on the ceiling. Also, algebraic equations and a computational fluid dynamic (CFD) model were used to estimate smoke properties in the smoke layer. The numerical results are compared with the experimental results.

Units: SI