- Author
-
Evans, D. D.
- Title
- Calculating Fire Plume Characteristics in a Two Layer Environment.
- Coporate
- National Bureau of Standards, Gaithersburg, MD
- Journal
-
Fire Technology,
Vol. 20,
No. 3,
39-63,
August 1984
- Report
-
NBSIR 83-2670,
September 1983,
47 p.
- Distribution
- Available from National Technical Information Service
- Keywords
-
compartment fires
|
fire models
|
fire plumes
|
room fires
|
sprinkler systems
- Abstract
- Methods are developed to determine axial gas flow conditions within a weakly buoyant plume that passes from an ambient quiescent environment, in which the plume originates, to an upper layer at elevated temperatures. The methods are appropriate for inclusion in two layer analysis of enclosure fire. In particular, they are a first step in developing a prediction of actuation time for thermally activated automatic sprinklers exposed to an enclosure fire. Result obtained with various methods are compared with measurements in a 1.22 m diameter cylindrical enclosure.