الفهرس 
LITERATURE REVIEWOnly 14 pages are availabe for public view
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Abstract
Compartment fires have been studied by many previous investigations. A small
fire in a compartment generates a buoyant plume of hot gas, which flows upward
to the ceiling. Impingement of the fire plume on the ceiling results in a radially
outward flow of a thin layer of gas, just below the ceiling. This near-ceiling flow,
which is named ceiling jet, is the flow in which fire detectors and extinguishers
(including sprinklers) and suppressors must operate. A significant number of these
investigations are concerned with studying, theoretically and/or experimentally, the
ceiling jet. Despite these investigations, detailed measurements of velocity and
temperature, together, of these hot gases have not been obtained to date.
The present study deals with the gas flow in a ceiling jet, that is induced when the
hot plume from a small-scale, simulated pool fire source impinges on and flows
radially outward just beneath a horizontal ceiling unobstructed by walls. The
experimental work includes detailed measurements of ceiling jet velocity and
temperature at different fire conditions. A 25mm diameter sandbox burner, with
LPG as the fuel, simulates the pool fire. The problem parameters investigated are
the burner tip-to-ceiling height, and the fire heat release (the fire strength). It is
found that the present data agree well with that of previous investigations, which
were conducted on small or full-scale experiments. In spite of this agreement, the
smallest ceiling height data of the ceiling jet thermal and momentum thickness
represent exception. The present work, also, presents the contours of velocity and
temperature, as a useful way of data presentation. Furthermore, the contours of the
dimensionless values as well as algebraic correlations of velocity and temperature