FireDOC Search

Author
Cooper, L. Y.
Title
Ceiling Jet-Driven Wall Flows in Compartment Fires.
Coporate
National Bureau of Standards, Gaithersburg, MD
Journal
Combustion Science and Technology, Vol. 62, 285-296, 1988
Report
NBSIR 87-3535, April 1987, 30 p.
Distribution
Available from National Technical Information Service
Keywords
ceilings | compartment fires | convective heat transfer | enclosure fires | fire plumes | fire modeling | heat transfer | room fires | walls
Identifiers
compartment fire behavior; depth of penetration; net rate of entrainment
Abstract
Analytic estimates are developed for depth of penetration and lateral entrainment of negatively buoyant, ceiling jet-driven wall flows during early times of compartment fire scenarios. When walls are not too far from the fire source of the order of the fire-to-ceiling distance, it is found that the penetration of these downward wall flows is a large fraction of the fire-to-ceiling distance, and that this fraction is relatively independent of the details of fire size and fire-to-wall spacing.