Simulating the Effect of Flat Beamed Ceiling on Detector and Sprinkler Response.
Simulating the Effect of Flat Beamed Ceiling on Detector
and Sprinkler Response.
Forney, G. P.; Bukowski, R. W.; Davis, W. D.
American Society of Mechanical Engineers. Fire,
Combustion, and Hazardous Waste Processing. HTD-Vol.
296. November 6-11, 1994, Chicago, IL, American Society
of Mechanical Engineers, NY, Acharya, S.; Annamalai, K.;
Presser, C.; Skocypec, R. D., Editor(s)(s), 143-150 pp,
combustion; hazardous materials; waste disposal; beams;
detector location; detector response; fire simulation;
fluid flow; smoke detection; ceilings; sprinkler
This paper documents a portion of the work performed
during the first year of the International Fire
Detection Research Project sponsored by the National
Fire Protection Research Foundation (NFPRF). The first
task was to confirm that fire sensor response can be
evaluated using computational data obtained from
numerical simulations. A field model was verified for
this application by showing that its temperature
predictions match experimental results obtained earlier
by Heskestad and Delichatsios. This paper concentrates
on the second task which was to perform a parameter
study to show the effect of sensor response under beamed
ceilings for various geometries and fire sizes. One
question that is addressed is under what conditions can
sensors be located on beams rather than in beam pockets.
Time to sensor activation contour plots are presented
that address this question. Twenty cases were run for
various fire sizes, beam depths, beam spacings and
ceiling heights. These data are summarized and
recommendations are made on placing sensors in rooms
with beamed ceilings.