Comparison of Fire Model Predictions With Experiments Conducted in a Hangar With a 15 Meter Ceiling.
Comparison of Fire Model Predictions With Experiments
Conducted in a Hangar With a 15 Meter Ceiling.
Davis, W. D.; Notarianni, K. A.; McGrattan, K. B.
NISTIR 5927; 61 p. December 1996.
Sponsor:National Aeronautics and Space Administration,
Available from: National Technical Information Service
Order number: PB97-129555
aircraft hangars; fire models; experiments; simulation;
fire tests; heat detection; predictive models; smoke
detection; computational fluid dynamics; zone models;
experiments; smoke detection
The National Aeronautics and Space Administration
together with the National Institute of Standards and
Technology are in the fourth year of a five year project
designed to help NASA set guidelines for fire protection
in high bay facilities. A high bay facility is defined
in this study as any space with a ceiling height in
excess of 9 m. NASA has numerous high bay spaces that
are used to perform a variety of functions. The work
this year made use of a set of fire experiments
conducted in a 15 m high hangar by NIST and the U.S.
Navy to study the predictive capabilities of zone fire
models and computational fluid dynamics models (CFD).
The models studied included the zone models CFAST,
DETACT-QS, FPETool, and LAVENT and the CFD models CFX
and NIST-LES. The study compares the model predictions
with measured temperature profiles in the ceiling jet
and the plume. Velocity measurements, smoke detector
activation and the impact of draft curtains on smoke
flow are also analyzed. The fires sizes studied in the
experiment are 500 kW and 2.7 kW JP-5 pan fires.