Prediction of Fire Dynamics. Final Report. Third Calendar Quarterly Report. July 1, 1994-August 28, 1994.
Prediction of Fire Dynamics. Final Report. Third
Calendar Quarterly Report. July 1, 1994-August 28,
1994.
(2162 K)
deRis, J.
NIST GCR 97-729; 39 p. October 1997.
Sponsor:
National Institute of Standards and Technology,
Gaithersburg, MD
Available from:
National Technical Information Service
Order number: PB98-110224
Keywords:
fire dynamics; ceiling jets; diffusion flames; heat
transfer; fire models; flame spread; soot; temperature;
turbulent flames; walls
Abstract:
This report summarizes accomplishments of a Factory
Mutual Research Corporation (FMRC) project on the
Prediction of Fire Dynamics for the NIST grant period
indicated. Work performed under a subcontract by
Professor H.W. Emmons on Transient Ceiling Jet Heat
Transfer is described as part of Task 1, Prediction of
Fire in Buildings. This task has developed new
practical expressions for heat transfer rates between
the fire-induced ceiling-jet and the ceiling surface, so
that the rate of increase in ceiling temperature can be
predicted more reliably. The accomplishments of three
tasks performed at FMRC are then presented in summaries
of Tasks 2, 4, and 5. In Tasks 2 and 4, considerable
progress has been made in the formulation of similarity
relationships for gas temperature and soot layer
thickness profiles in real-scale wall fires. We believe
that these similarity relationships can be exploited to
describe turbulent buoyant flames on vertical surfaces
more accurately than ever. All of this work is aimed at
the development of submodels or algorithms that can be
used in NIST/BFRL comprehensive computer fire models.
The FMRC tasks have previously led to the development of
practical smoke-point measurement techniques for solid
combustible materials, as described in a paper presented
at the 4th International Symposium on Fire Safety
Science, Ottawa, June 1994.
Building and Fire Research Laboratory
National Institute of Standards and Technology
Gaithersburg, MD 20899