- Author
-
Gritzo, L. A.
|
Moya, J. L.
|
Murray, D.
- Title
- Fire Characterization and Object Thermal Response for a Large Flat Plate Adjacement to a Large JP-4 Fuel Fire.
- Coporate
- Sandia National Labs., Albuquerque, NM
Naval Air Warfare Center, China Lake, CA
- Sponsor
- Department of Energy, Washington, DC
- Report
-
SAND97-0047; UC-700,
February 1997,
78 p.
- Distribution
- AVAILABLE FROM National Technical Information Service (NTIS), Technology Administration, U.S. Department of Commerce, Springfield, VA 22161. Telephone: 1-800-553-6847 or 703-605-6000; Fax: 703-605-6900. Website: http://www.ntis.gov
- Contract
- DE-AC04-94AL85000
- Keywords
-
JP-4 jet fuel
|
experiments
|
calorimeters
|
risk assessment
|
fire models
|
field models
|
validation
|
temperature
|
heat flux
|
wind effects
|
data acquisition
- Identifiers
- flat plate calorimeter design drawings; justification for simple SODDIT model; selection of SODDIT parameters
- Abstract
- A series of three 18.9 m diameter JP-4 pool fire experiments with a large (2.1 m x 4.6 m), flat plate calorimeter adjacent to the fuel pool were recently performed. The objectives of these experiments were to: 1) gain a better understanding of fire phenomenology, 2) provide empirical input parameter estimates for simplified, deterministic Risk Assessment Compatible Fire Models (RACFMS), 3) assist in continuing fire field model code validation and development, and 4) enhance the data base of fire temperature and heat flux to object distributions. Due to different wind conditions during each experiment, data were obtained for conditions where the plate was not engulfed, fully-engulfed and partially engulfed by the continuous flame zone. Results include the heat flux distribution to the Plate and flame thermocouple temperatures in the vicinity of the plate and at two cross sections within the lower region of the continuous flame zone. The results emphasize the importance of radiative coupling (i.e. the cooling of the flames by a thermally massive object) and convective coupling (including object-induced turbulence and ob-ject/wind/flame interactions) in determining the heat flux from a fire to an object. The formation of a secondary flame zone on an object adjacent to a fire via convective coupling (which increases the heat flux by a factor of two) is shown to be possible when the object is located within a distance equal to the object width from the fire.