Algorithm for Calculating the Plume Center Line Temperature and Ceiling Jet Temperature in the Presence of a Hot Upper Layer

Published

August 10, 1997

Author(s)

William D. Davis, Kathy A. Notarianni

Abstract

The analysis of recent experiments (NIST TN 1423) using JP-5 and JP-8 pool fires performed in 15 m and 22 m high hangars suggest that plume center line temperature correlations found in the computer fire model FPETool (NISTIR 5486-1) under predict the ceiling temperature for large fires. The analysis was based on the results of thirty-three fire tests which had heat release rates ranging from 100 kW to 33 MW and ambient temperatures ranging from 8 deg C to 31 deg C. The ceiling jet correlation also requries modification since a comparison of predicted sprinkler activation using FPETool to measured sprinkler activation met with only limited success. The purpose of this paper is to present a new plume algorithm for the predicted sprinkler activation using FPETool to measured spirnkler activation met with only limited success.

Proceedings Title

Fire Research and Engineering, Second (2nd) International Conference. (ICFRE2). ABSTRACTS ONLY. National Institute of Standards and Technology and Society of Fire Protection Engineers

Conference Dates

August 10-15, 1997

Conference Location

Gaithersburg, MD

Pub Type

Conferences

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Keywords

fire research, fire protection engineering, temperature, ceiling jets, pool fires, zone models, fire plumes, ceiling jets, sprinkler activation

Citation

Davis, W. and Notarianni, K. (1997), Algorithm for Calculating the Plume Center Line Temperature and Ceiling Jet Temperature in the Presence of a Hot Upper Layer, Fire Research and Engineering, Second (2nd) International Conference. (ICFRE2). ABSTRACTS ONLY. National Institute of Standards and Technology and Society of Fire Protection Engineers, Gaithersburg, MD, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=916621 (Accessed October 12, 2025)